Honggen Peng

• Doctor
• Professor at Nanchang University

Catalytic oxidation is used to control carbon monoxide (CO) emissions from industrial exhaust. In this work, The prepared Pta-Fe(OH) x catalysts (x represents the mass fraction of Pt loading (%), a = 0.5, 1 and 2) by the one-pot reduction method exhibited excellent CO catalytic activity, with the Pt2-Fe(OH) x catalyst, 70% and ∼100% CO conversion w...

Catalytic oxidation is used to control carbon monoxide (CO) emissions from industrial exhaust. In this study, a mesoporous silica material, KCC-1, was synthesized and used as a carrier with a high specific surface area to confine active component FeOx nanoparticles (NPs), and the CO catalytic oxidation performance of x%Fe@KCC-1 catalysts (x represe...

A large surface area dendritic mesoporous silica material (KCC-1) was successfully synthesized and used as a support to confine SnO2 nanoparticles (NPs). Owing to the large specific surface area and abundant mesoporous structure of dendritic KCC-1, the SnO2 NPs were highly dispersed, resulting in significantly improved CO catalytic oxidation activi...

Facile approaches capable of constructing stable and structurally diverse porous liquids (PLs) that can deliver high-performance applications are a long-standing, captivating, and challenging research area that requires significant attention. Herein, a facile surface deposition strategy was demonstrated to afford diverse type III-PLs possessing ult...

Methane and carbon dioxide can be converted into syngas using the prospective dry reforming of methane technology. Carbon deposition is a major cause of catalyst deactivation in this reaction, especially at low temperature. The superior stability of bimetallic catalysts has made their development more and more appealing. Herein, a series of bimetal...

In this study, CuX zeolite supported Mn and/or Ce oxides catalysts were synthesized by combining ion exchange and impregnation methods, and the zeolite X was generated using blast furnace slag (BFS). Doping Mn-Ce oxides onto the CuX catalyst, which has excellent resistance to SO2+H2O, improved the catalyst's activity for NH3-SCR at lower temperatur...

How to widen the active temperature window of metal oxide catalysts for abatement of NOx is urgent for their real application. Herein, a series of ternary MnCoVOx metal oxide catalysts with outstanding denitration performance were designed via a simple dual acid-redox sites tuning strategy, which is to inhibit the redox ability properly and enhance...

Metal nanocluster catalysts with superior activity and stability are urgently needed in the deep oxidation of volatile organic compounds (VOCs). In this study, a novel silicalite-1 zeolite confined rhodium-manganese bimetallic nano-cluster (1.6 nm) catalyst (Rh-MnOx@S-1) was designed and prepared by a simple one-pot method using a dual confinement...

Methane and carbon dioxide reforming (dry reforming of methane, DRM) is one of the promising methods to utilize these two main greenhouse gases, which make great contribution to the global carbon neutrality strategy. It is well known that the uppermost obstacle of DRM reaction is the carbon deposition, especially at low reaction temperature. Herein...

Volatile organic compounds (VOCs) are the main precursor for ozone formation and hazardous to human health. Light alkane as one of the typical VOCs is difficult to degrade to CO2 and H2O by catalytic degradation method due to its strong C–H bond. Herein, a series of ultrafine Ru nanoclusters (<0.95 nm) enveloped in silicalite-1 (S-1) zeolite cataly...

Lithium-oxygen (Li-O2) batteries are considered as the next generation for energy storages systems due to the higher theoretical energy density than that of Li-ion batteries. However, the high charge overpotential caused by the insulated Li2O2 results in low energy efficiency, side reaction from electrolyte and cathode, and therefore poor battery p...

The small-pore CHA-type zeolites have received intensive attentions due to their outstanding performance in both of the methanol-to-olefin (MTO) process and ammonia selective catalytic reduction of nitrogen oxides (NH3-SCR of NOx) reactions. However, the costly synthesis of CHA-type aluminosilicate is a great issue for the practical application. In...

Supported ultrasmall metal/metal oxide nanoparticles (UMNPs) with sizes in the range of 1–5 nm exhibit unique properties in sensing, catalysis, biomedicine, etc. However, the metal–support and metal–metal precursor interactions were not as well controlled to stabilize the metal nanoparticles on/in the supports. Herein, DNA is chosen as a template a...

Zeolite-confined metal nanoparticles (NPs) have attracted much attention owing to their superior sintering resistance and broad applications for thermal and environmental catalytic reactions. However, the pore size of the conventional zeolites is usually below 2 nm, and reactants are easily blocked to access the active sites. Herein, a facile in si...

Copper catalysts have been extensively studied for CO oxidation at low temperatures. Previous findings on the stability of such catalysts, on the other hand, revealed that they deactivated badly under extreme circumstances. Therefore, in this work, a series of KCC−1-supported copper oxide catalysts were successfully prepared by impregnation method,...

In this study, a trifunctional strategy was developed to prepare a confined Ni-based catalyst (Ni-CeO2@SiO2) for dry reforming of methane (DRM) of two main greenhouse gases—CO2 and CH4. The Ni-CeO2@SiO2 catalyst was fabricated by utilizing the confinement effect of the SiO2 shell and the synergistic interaction between Ni-Ce and the decoking effect...

Methanol-to-olefins (MTO) technology presently serves as a key to convert coal or natural gas to valuable hydrocarbons, in particular lower olefins. This work focuses on developing a low cost and environmentally benign MTO catalyst from low-silica CHA zeolite. Its moderate acidity and reaction space have been balanced by tuning the residual K+ cati...

The emergence of porous liquids (PLs) opened opportunities to form unique antagonistic systems capable of fulfilling cascade reactions promoted by incompatible active sites in one pot, which is a long-term challenging subject in catalysis. Herein, unique bifunctional type III PL-based systems were facilely fabricated via assembly of zeolite nanoshe...

Nitrogen oxide (NOx), one of the main air pollutants exhausted from diesel vehicles, is harmful to the environmental and human health, and has been selective catalytically reduced to N2 by Cu exchanged zeolites with chabazite structure (CHA, Cu-SSZ-13). Unfortunately, the conventional Cu-SSZ-13 catalyst still has disadvantages in real applications,...

The formation of ammonium sulfates and existence of mass transportation limits during selective catalytic reduction of NOx with NH3 (NH3-SCR) are severely affecting the deNOx performance of small pore zeolites. Herein, a novel hierarchical porous Cu-SAPO-34-Meso zeolite rich with mesopores was synthesized by one pot dual-template strategy. Cu-SAPO-...

Oxynitride (NOx, mainly NO and NO2) is a primary source of atmospheric pollutants from the exhaust of fossil fuel combustion. It is well known that the selective catalytic reduction of NOx with NH3 (NH3-SCR) is the most efficient technology for NOx control, and the Mn-Ce-based catalysts display remarkable low-temperature deNOx performance; however,...

Carbon dioxide and methane are two main greenhouse gases which are contributed to serious global warming. Fortunately, dry reforming of methane (DRM), a very important reaction developed decades ago, can convert these two major greenhouse gases into value-added syngas or hydrogen. The main problem retarding its industrialization is the seriously co...

Zeolites with a small pore structure are considered as the most efficient catalysts to satisfy the increasingly stringent emission requirement for diesel vehicles. Since the molecular size of NO is comparable to the pore size of small-pore zeolites, the formation of ammonium and sulphates during selective catalytic reduction of NOx with NH3, the li...

The costly synthesis of conventional CHA zeolites for ammonia selective catalytic reduction of nitrogen oxides (NH3-SCR of NOx) has hindered their widespread applications. In this study, highly crystalline CHA zeolites (CHA-Y and CHA-B) were successfully synthesized from low-cost NaY and Al-rich beta precursors and alternately low cost or low conte...

Herein, a series of nano-flower sheet-like alumina spheres (NF-Al2O3) with rich unsaturated pentacoordinate Al³⁺ sites stabilizing Ru-CeOx catalysts were designed and synthesized for catalytic total oxidation of one typical light alkanes (propane, C3H8). The 90% conversion temperature (T90) and the apparent activation energy (Ea) of Ru-Ce7/NF-Al2O3...

Manganese (Mn)-based mixed oxides are considered as the most efficient catalysts for low-temperature ammonia selective catalytic reduction of nitrogen oxides (NOx) (NH3-SCR of NOx). Unfortunately, water resistance and sulfur tolerance, especially the SO2 tolerance of Mn-based catalysts, are the main obstacles preventing their practical application....

The main performance limitation of lithium-oxygen (Li-O2) batteries is the formation of the insulating discharge product lithium peroxide (Li2O2), which results in high charging overpotentials and poor cycle stability. Here, Ni-Fe layered double hydroxides (LDHs) with Ni vacancies (Ni-Fe LDHs-VNi) are employed as cathode catalysts for Li-O2 batteri...

Nitrogen oxides (NOx) are a primary source of air pollutants from combustion of fossil fuels. Though Mn-Ce based catalysts exhibit superior low temperature activities, their water and SO2 tolerance is inferior to other metal oxide catalysts, due to their strong water adsorption and sulfate species formation tendency at low reaction temperatures. He...

Small pore zeolites with chabazite structure have been commercialized for selective catalytic reduction (SCR) of nitrogen oxides (NOx) with ammonium (NH3) from diesel exhaust. However, conventional zeolite synthesis processes detrimental effects on the environment due to the consumption of large amount of water, organic templates. Thus, this study...

Volatile organic compounds (VOCs) are significant ozone (O3) and particulate matter (PM) formation precursors and are deleterious to both human health and environment. Catalytic combustion can degrade VOCs to H2O and CO2 without secondary pollution, suggesting a potential sustainable technology for air pollution control. However, the concentration...

Hierarchical ZSM-5 zeolite with meso- and micro-pore structures was successfully prepared through a facile one-pot hydrothermal synthesis method using bifunctional template. After copper ion-exchange, it was applied for the selective catalytic reduction of NO with NH3 (NH3-SCR). Compared with conventional Cu-ZSM-5 catalyst containing only micropore...

A series of hierarchical three-dimensionally ordered macroporous Fe10-xVx binary metal oxides (3DOM-Fe10-xVx) catalysts were designed and synthesized for selective catalytic reduction of NOx from marine diesel engine exhaust. The physical-chemical performance of the 3DOM-Fe10-xVx catalysts were subjected by various techniques and found that the 3DO...

One of the grand challenges in industrial catalytic processes is the inevitable sintering and aggregation of conventional supported catalysts to large particles, leading to the decrease of activity and even deactivation with time. Herein, a unique surface spatial confinement strategy was employed to design high-performing catalysts for the dry refo...

Cerium oxide is one of the most important rare earth metal oxides in catalysis, however, the sintering problem of noble metals and CeO2 at higher temperature (e.g., >700 °C) is still unresolved. Herein, Pt nanoparticles self-assembled on ultra-thin CeO2 nanowires (NWs) and then confined inside a thermally robust porous silica shell (Pt-CeO2[email p...

Herein, the nano-sized MOR zeolites were applied for selective catalytic reduction of NOx with NH3 and the effect of particle size on catalytic performance was studied in detail. Accordingly, three kinds of Cu-MOR with different particle size (0.23, 0.96, and 2.20 µm) were prepared and used for removing NOx from diesel exhaust. Our results demonstr...

Polyoxometalates (POMs) are a family of promising homogenous catalysts in various processes. The design of POM-based heteregenous catalysts, while important for real-world catalysis, is an important topic. Herein, a green and effective mechanochemical assembly strategy was developed to encapsulate POM inside the ordered mesoporous polymer (OMP) wit...

Cu contained zeolites are often synthesized by two methods: ion exchange or one-pot synthesis. The former contains zeolite synthesis and ion exchange two steps. For the latter method, the synthesis of Cu based zeolites is more convenient. However, the Cu content is very difficult to control. In this work, we developed a facile one pot dual template...

A series of three-dimensionally ordered macroporous (3DOM) SnO2-based catalysts modified by the cations Ce⁴⁺, Mn³⁺, and Cu²⁺ have been prepared by using a colloidal crystal templating method and tested for soot combustion under loose contact condition. XRD and STEM mapping results confirm that all the secondary metal cations have entered the lattic...

Pure SnO 2 nano-rods and nano-rods promoted by the secondary metal cations in the lattice matrix have been synthesized by a hydrothermal method, and used to support Pd to prepare catalysts for toluene combustion. It has been revealed that in comparison with regular SnO 2 powder support, a much higher ratio of metallic Pd 0 can be formed and stabili...

Perovskites with ABO3 structure are the potential catalysts to replace the noble metals used in environmental catalysis, e.g. CO oxidation, volatile organic compounds (VOCs) and soot combustion. Herein, a novel double-shelled porous perovskite-type LaNiO3 nanocage (assigned as LaNiO3-Cage, with dual cage or cage in cage structure) was successfully...

Noble metal/transition metal oxide interfaces are typically considered as highly active sites for most heterogeneous catalytic reactions and can effectively increase the utilization of noble metals. One of the challenges in such catalytic systems, particularly under high‐temperature reactions, is the lack of an effective strategy to stabilize the c...

To understand the active sites requirements for NOx-SCR by NH3 and for designing better catalysts, four SnO2-based solid solution samples with the SnO2 lattice doped by metal cations possessing redox ability (Ce4+ and Cu2+) or acidity (In3+ and W6+) have been purposely designed. It is revealed that the metal cations have entered into the SnO2 matri...

The selective catalytic reduction of NOx with propane as reductant (C3H8‐SCR) is an attractive alternative for the depletion of NOx generated under lean burn condition. Herein, we developed a novel and low‐cost three‐dimensional CoOx@USY catalyst applied for catalytic reduction of NO with propane for the first time. The as‐fabricated hierarchical a...

Pd‐CeOx solid solutions have demonstrated promising performance in industrial and environmental catalysis. However, challenges such as severe growth and aggregation of Pd and thermal‐, vapor‐ or SO2‐induced poisoning still obstruct their path toward real‐world applica‐tions. Herein we develop an efficient strategy (enhanced metal‐oxide interaction...

To gain fundamental understanding on the catalytic property of individual CuO for soot combustion, a series of CuO samples have been prepared with a simple precipitation method by using different Cu precursors and precipitants. Pure monoclinic CuO crystalline phase has been detected by XRD and Raman for all the samples. However, by changing the pre...

This work report a new strategy toward design of a new class of supported catalysts with intrinsic high–temperature stabilities through entropy maximization. The use of Pt, Ni, Mg, Cu, Zn,...

Core–Shell-Structured Titanosilicate As A Robust Catalyst for Cyclohexanone Ammoximation

Abstract Dry reforming of methane (DRM) is a fascinating reaction that utilizes two greenhouse gases (CH4 and CO2) to produce value-added synthesis gas (syngas, a mixture of CO and H2) or hydrogen as a green energy source. Ni-based nanomaterials are considered the most promising DRM catalysts used in industry. However, Ni-based catalysts have sinte...

In this study, with the purpose to obtain more efficient catalysts for methane dry reforming, an Mg-Al-O support having excess MgO and higher alkalinity than pure MgAl2O4 spinel support have been designed and used to prepare Ni/Mg-Al-O catalysts. XRD has demonstrated that this support consists of both MgO and MgAl2O4 spinel phases. As a result, Ni/...

To elucidate the structure and reactivity relationship of A2B2O7 pyrochlore compounds, a series of Ln2Sn2O7 catalysts (Ln = La, Pr, Sm and Y) with varied rare earth cation A sites but with a fixed Sn cation B site have been synthesized and probed by CO oxidation. It is revealed that all the samples are composed of cubic pyrochlore phases. By replac...

The mordenite (MOR) nanoparticles (MNPs) with ultra-small crystallites (∼30 nm) were synthesized by using tetraethylammonium bromide (TEAB) as structure directing agent at low temperature (403 K). The formation of MNPs was considered to be due to high concentration of TEAB and occurrence of limiting Ostwald ripening at low temperature. The MNPs exh...

Mesoporous MFI zeolites (MMZs) have been constructed by using the surfactant containing azobenzene segment in the hydrophobic tail. The cylindrical π‐π stacking of azeobenzene groups is considered to be the key factor to form the ordered mesostructure through cooperative structural matching and the rearrangement of MFI frameworks. The mesostructure...

The Cover Feature shows how the addition of a suitable amount of lithium oxide into SnO2 can remarkably improve its performance in the oxidative coupling of methane, especially in the low‐temperature region below 750°C. Both the surface electrophilic oxygen species and the alkaline sites with intermediate strength are critical for the target reacti...

Methane steam reforming Coking resistance Defective fluorite a b s t r a c t In this study, a series of Y 2 B 2 O 7 compounds with a fixed Yttrium cation A site but with different B (B]Ti, Sn, Zr and Ce) sites have been synthesized and used to support Ni for methane reforming for hydrogen production. By replacing the B site with Ti, Sn, Zr and Ce c...

Most of the industrial and environmental catalytic reactions are operated at high temperature for a long time, and the sintering of the active centers is the main factor leading to catalysts deactivation, especially for noble metal catalysts. Herein we develop a dual confinement (enhanced metal-oxide interaction and the porous shell confinement) st...

Methane dry reforming (DRM) is a fascinating reaction which can effectively utilize two abundant and greenhouse gases (CO2 and CH4) to prepare syngas (CO and H2). The design and synthesis of high coking resistance Ni based catalysts are still a challenge. Herein, a perfect perovskite LaNiO3 nano-cube was encapsulated in perpendicular mesoporous sil...

Pd‐CeOx solid solutions have demonstrated promising performance in industrial and environmental catalysis. However, challenges such as severe growth and aggregation of Pd and thermal‐, vapor‐ or SO2‐induced poisoning still obstruct their path toward real‐world applica‐tions. Herein we develop an efficient strategy (enhanced metal‐oxide interaction...

To develop more efficient catalysts that can be operated at low temperature region for oxidative of methane (OCM), a series of Ln2Ce2O7 compounds with different A sites (Ln = La, Pr, Sm and Y) have been prepared. It is revealed by XRD and Raman techniques that a defective cubic fluorite phase has been formed in all the catalysts. As a consequence,...

Mesoporous NiO nano-sheet catalysts have been successfully synthesized by hydrothermal method with polyethylene glycol (NiO-PEG) and polyvinyl pyrrolidone (NiO-PVP) as soft templates. Compared with NiO catalysts prepared with direct calcination and precipitation methods, both NiO-PEG and NiO-PVP possess a large amount of intraparticle and interpart...

In this study, SnO2-based catalysts promoted by different alkali metal oxides with a Sn/M (M = Li, Na, K, Cs) molar ratio of 9/1 have been prepared for soot combustion. In comparison with the un-modified SnO2 support, the activity of the modified catalysts has been evidently enhanced, following the sequence of CsSn1-9 > KSn1-9 > NaSn1-9 > LiSn1-9 >...

Removal of volatile organic compounds (VOCs) has recently been attracted much attention, and zeolite supported platinum catalyst is regarded as one of the most efficient methods. Herein, hierarchical porous mordenite (denoted as HPMOR) was fabricated via a facile acid and alkali post-treatment strategy and used for toluene total combustion for the...

Metal oxides with special exposed facets have very important effect on their catalytic performances. Though mono-metal oxides exposed special facets can be easily prepared via various approaches, the synthesis of mixed metal oxides exposed special facets are still a challenge to date. Herein, Sn−Mn mixed oxide nano-rods exposed (110) facet have bee...

SnO2 nano-rods doped by In, Cr and Al cations have been fabricated by using hydrothermal method and evaluated for toluene total oxidation. SEM results demonstrate that the initial nano-rods aggregated into three-dimensional microspheres for all the samples. XRD testifies that all the SnO2 nano-rod catalysts are well crystallized with low surface ar...