Joby Sebastian

Joby Sebastian

PhD

About

17
Publications
1,450
Reads
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305
Citations
Citations since 2017
11 Research Items
271 Citations
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
Additional affiliations
October 2021 - present
RWTH Aachen University
Position
  • PostDoc Position
Description
  • Deoxydehydration of Polyols
October 2019 - September 2021
Chalmers University of Technology
Position
  • PostDoc Position
Description
  • Lignin Conversion to Fuels, CO2 Conversion to Fuels.
June 2016 - February 2019
Dalian Institute of Chemical Physics
Position
  • PostDoc Position

Publications

Publications (17)
Article
Full-text available
Catalytic hydrodeoxygenation (HDO) is an important hydrotreating process that is used to improve the quality of bio-oils to produce biomass-derived fuel components and chemicals. Molybdenum disulfide (MoS2) has been widely used as a catalyst in hydrodesulfurization (HDS) applications for several decades, which can be further improved for effective...
Article
Full-text available
One-pot deoxygenation of kraft lignin to aromatics and hydrocarbons of fuel-range quality is a promising way to improve its added value. Since most of the commercially resourced kraft lignins are impure (Na, S, K, Ca, etc., present as impurities), the effect of these impurities on the deoxygenation activity of a catalyst is critical and was scrutin...
Article
Full-text available
Catalytic hydrogenation of CO2 to methanol has gained considerable interest for its significant role in CO2 utilization using heterogeneous catalysts. This study is the first to propose a kinetic model based on Langmuir-Hinshelwood-Hougen-Watson (LHHW) mechanism for CO2 hydrogenation to methanol over a highly effective indium oxide (In2O3) catalyst...
Article
Full-text available
The efficient conversion of CO2 to hydrocarbon offers a way to replace the dependency on fossil fuels and mitigate the accumulation of surplus CO2 in the atmosphere that causes global warming. Therefore, various efforts have been made in recent years to convert CO2 to fuels and value-added chemicals. In this review, the direct and indirect hydrogen...
Article
Amino acid lysine could serve as an ideal bio-based feedstock for the synthesis of caprolactam (CPL), which is currently a petroleum-derived monomer. Herein, we report the one-pot conversion of l-lysine to CPL via hydrogenolysis over bifunctional metal supported catalysts. Among the various hydrogenation metals and different supports, the combinati...
Article
Ball milling pretreatment was found to be an efficient method to promote the catalytic conversion of lignocellulosic biomass to ethylene glycol (EG). After 3-6 h ball milling of Miscanthus at 450 rpm, the EG yield reached ca. 52%, which is comparable to the result of pure cellulose conversion. The reasons of the promotion effect were investigated b...
Article
Catalytic conversion of glucose, the most abundant carbohydrate, to chemicals of petroleum origin has great desirability in terms of sustainability and industrial implementation. In this work, we attempted to exploit the vanadium-based catalysts with high retro-aldol condensation (RAC) activity for the synthesis of small polyols from glucose. Vanad...
Article
An efficient and green method for the synthesis of 2-hydroxymethyl-5-methylpyrazine was achieved from biomass derived 1,3-dihydroxyacetone and diammonium phosphate via one-pot reaction. The product yield was as high as 72% underoptimized conditions of pH=8.0-9.1 at 90 oC for 1 hour in a dioxane and water mixture as solvent. A possible reaction mech...
Article
Ethylene glycol (EG), synthesized from biomass, frequently contains refractory 1,2-propanediol (PDO) and 1,2-butanediol (BDO). Selective removal of PDO and BDO was realized herein by catalytic dehydration to form volatile aldehydes, ketones, and acetals. Various acidic and basic catalysts were screened under a range of conditions for the conversion...
Chapter
Double-metal cyanides (DMCs) are an interesting class of inorganic complexes that exhibit attractive catalytic activity for copolymerization of carbon dioxide (CO2) and epoxides producing biodegradable, aliphatic polycarbonates. They are efficient catalysts also for preparing polyether polyols. Systematic studies on these commercially important cat...
Article
Full-text available
A series of Sn-SBA-15 catalysts were synthesized using a post-synthetic metal implantation method for converting carbohydrates to methyl lactate. The tin species were highly dispersed and isolatedly grafted in the framework of SBA-15 under the tin salt concentration between 2 and 25 wt%. They solely provided a large number of Lewis acid sites, whic...
Article
Co-Zn double-metal cyanides (DMCs) show good catalytic activity towards copolymerization of epoxides and CO2. A deep insight into the structural aspects of the catalysts that control their catalytic performance is addressed in this work. Method of preparation of DMC catalysts was found to have influence on their structure, which in turn dictated th...
Article
The application of Co-Zn double-metal cyanide (DMC) complexes as catalysts for selective terpolymerization of propylene oxide, cyclohexene oxide and CO2 producing polycarbonates is reported for the first time. DMC complexes were prepared with and without using a co-complexing agent. The complex with monoclinic/rhombohedral crystal structure and str...
Article
Co-Zn double-metal cyanide (DMC) complexes are well-known catalysts for ring-opening polymerization of epoxides and co-polymerization of CO2 and epoxides. This work provides an insight on structure-activity relationship of DMC for poly(cyclohexene carbonate) synthesis. Seven samples of DMC were prepared by different methods and mode of reagent addi...
Article
Fe–Zn and Co–Zn double-metal cyanide (DMC) complexes exhibit highly efficient and selective catalytic activity for synthesis of hyperbranched polyesters (glycerol–succinic acid (G-SA) and glycerol–adipic acid (G-AA)) and aliphatic polycarbonates (via., alternative co-polymerization of cyclohexene oxide and CO2), respectively. The influence of metho...
Article
Catalytic activity of a series of Fe–Zn double-metal cyanide (DMC) complexes with varying structural and acidic properties has been investigated for the synthesis of hyperbranched polyesters (HPs) from glycerol and succinic acid/adipic acid. The DMC complexes were prepared using different complexing and co-complexing agents. Hydrophobicity of the s...
Article
The use of Fe-Zn double-metal cyanide as a solid catalyst for synthesizing biodegradable, hyperbranched polymers from diacids and glycerol has been reported, for the first time, wherein acidity, micro-mesoporosity and hydrophobicity of the catalyst played an important role in controlling gelation.

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