Alicia García

Alicia García
King Juan Carlos University | URJC · Chemical and Environmental Engineering Group

PhD

About

19
Publications
7,152
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
953
Citations

Publications

Publications (19)
Article
Hierarchical Beta zeolites with different Si/Al molar ratios, synthesized by crystallization of silanized protozeolitic units, were investigated in the liquid-phase Beckmann rearrangement of cyclohexanone and cyclododecanone oximes. The hierarchical Beta samples contain mesopores with sizes in the range 2.0–6.0 nm, as well as the typical zeolite mi...
Article
The catalytic conversion of rapeseed oil has been investigated using Ga- and Zn-modified nanocrystalline HZSM-5 zeolite for the production of hydrocarbons that could be used as both raw chemicals and/or fuels. The reactions have been carried out in a fixed bed reactor operating under nitrogen at 550 °C and atmospheric pressure. The incorporation of...
Article
Catalytic conversion of rapeseed oil has been investigated over nanocrystalline and hierarchical ZSM-5 zeolites aimed to the production of both raw chemicals and fuels. Ni has been added to some of the samples in order to induce bifunctional properties in the catalysts. Almost total rapeseed conversion and deoxygenation degree were achieved with al...
Article
The conversion of rapeseed oil has been investigated using Mo oxide- and Ni-modified nanocrystalline ZSM-5 zeolites as catalysts in a nitrogen atmosphere. The incorporation of metals into the HZSM-5 support causes significant changes in their acid and textural properties, modifying also its catalytic behavior. For all the catalysts, an almost total...
Article
Full-text available
Within the present contribution we highlight the feasibility of standard refinery units for the production of biofuels from different biomass-derived feedstock. The energy densification of biomass, as well as it’s logistics and incorporation within the refinery supply chain is thoroughly discussed. Likewise, special attention is focused on the cata...
Chapter
This chapter highlights the feasibility of fluid catalytic cracking (FCC) units for the production of biofuels from different biomass feedstocks. Special attention will be focused on catalytic cracking of triglycerides, which are probably the most suitable feedstocks for their processing in FCC units since they possess density, viscosity and hydrog...
Article
The feasibility of standard refinery units for the production of biofuels from different biomass-derived feedstocks is highlighted. Special attention is focused on the catalytic cracking and hydrotreating of triglyceride-rich biomass feedstock, probably the most suitable for co-processing in conventional refinery conversion units. Opportunities of...
Article
The hydroreforming of the liquid product resulting from LDPE thermal cracking at 400°C (C5–C40) has been studied using Ni supported hierarchical zeolites (Ni/h-ZSM-5, Ni/h-Beta) and mesostructured materials (Ni/Al-MCM-41 and Ni/Al-SBA-15) as catalysts. Hydroreforming experiments were carried out at 310°C under 20bar of hydrogen. All the catalysts w...
Article
Full-text available
Mixtures of renewable raw materials such as vegetable oils (crude palm and soybean oil and waste cooking oil) and animal fat unfit for human consumption with petrol feedstock were assessed for considering their co-processing in refinery units. Vacuum gasoil, hydrotreated vacuum gasoil and atmospheric residue were taken as petrol feedstocks. Ageing...
Article
Nanocrystalline ZSM-5 (∼20–50nm) has been tested as a catalyst in the liquid phase rearrangement of 1,2-epoxyoctane, 2-methyl-2,3-epoxybutane and isophorone oxide together with a microcrystalline ZSM-5 sample (∼5μm) employed as a reference. Whereas this last material shows a low activity for the three epoxide rearrangement reactions considered, nan...
Article
Vegetable oils (crude palm oil and crude soybean oil), nonedible animal fats, and waste cooking oil (WCO) were mixed with a standard gas oil and tested under fluid catalytic cracking (FCC) conditions in a short-contact-time microactivity reactor using an industrial FCC equilibrium catalyst. Under the reaction conditions tested in this work, triglyc...
Article
Liquid phase rearrangement of 1,2-epoxyoctane has been investigated over Al-MCM-41 type mesostructured materials prepared by a sol–gel route with different Si/Al molar ratios. The main reaction product is the corresponding aldehyde, although other rearrangement products, mainly allylic alcohols and diol, are also obtained. The pore size and acidic...
Article
The rearrangement of isophorone oxide has been investigated over Al-MCM-41 type mesostructured catalysts having different Si/Al molar ratios. The main rearrangement products are the ¿-diketone and the keto aldehyde, whereas the product coming from the decarbonylation of the latter is detected in minor amounts. The textural properties and the number...
Article
The role of solvent nature in the liquid phase rearrangement of 1,2-epoxyoctane over Al-TS-1 and Al-MCM-41 catalysts is reported. The main reaction product is the aldehyde, while other rearrangement products, mainly allylic alcohols and diol, are obtained. The solvent polarity influences strongly on the activity and product selectivity. The catalyt...
Article
A variety of materials with different structural features and acid properties, including amorphous, mesostructured and zeolitic catalysts have been tested in the liquid-phase rearrangement of 1,2-epoxyoctane. The structure and acid strength of the catalysts influence strongly on the activity and product selectivity. The main rearrangement products...
Article
The crystallisation of CIT-6, a large-pore zincosilicate with the framework topology of zeolite Beta and synthesised from clear hydrogels that contain, tetraethylammonium (TEA+), Li+ and Zn2+ cations, proceeds initially through the formation of an amorphous solid that incorporates all the initial Zn species. Nucleation of the *BEA phase is effected...
Article
Full-text available
Tesis Doctoral leída en la Universidad Rey Juan Carlos en abril de 2005. Directores de la Tesis: David P. Serrano Granados y Rafael van Grieken Salvador