Results 31 to 40 of about 233,138 (362)

Oxidative desulfurization of diesel fuel oil using supported Fenton catalysts and assisted with ultrasonic energy

Petroleum Science, 2019
An ultrasound-assisted heterogeneous catalytic oxidation process was applied to eliminate sulfur from commercial diesel fuel oil. The studied variables were catalyst concentration, type of catalyst (homogeneous or heterogeneous), oxidizing agent ...
Roberto Flores, Arturo Rodas, Raquel Gasperin   +2 more
doaj   +1 more source

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization [PDF]

, 2015
The Guerbet condensation reaction is an alcohol coupling reaction that has been known for more than a century. Because of the increasing availability of bio-based alcohol feedstock, this reaction is of growing importance and interest in terms of value ...
Gabriels, D, Hernández Enciso, Willinton Yesid, Sels, B, Van Der Voort, Pascal, Verberckmoes, An   +4 more
core   +2 more sources

Transesterification via Direct-Ultrasonic Irradiation of Rubber Seed Oil with Waste Materials Based Heterogeneous Catalyst

Chemical Engineering Transactions, 2015
Present process of transesterification faces various challenges. The most challenging is to obtain high conversion rate when using high free fatty acid (FFA) feedstock.
M.M. Amin, S. Yusup
doaj   +1 more source

Starch-derived Solid Acid Catalyst for Biodiesel Production: A Mini Review

Chemical Engineering Transactions, 2021
An international agreement to combat the global climate change issue - Paris Climate Agreement which involved participation of 190 parties as of January 2021, showed the world’s concern on the global climate change issue.
Wan Ting Tan, Mazura Jusoh, Zaki Yamani Zakaria   +2 more
doaj   +1 more source

Pd on thermo-responsive composite of silica-coated carbon nanotube and 1-vinyl-3-butylimidazolium-based ionic liquid copolymers as an efficient catalyst for hydrogenation of nitro compounds

Scientific Reports, 2022
In this work, an ionic liquid-containing thermo-responsive heterogeneous catalyst with utility for promoting hydrogenation of nitro-compounds in aqueous media is developed.
Samahe Sadjadi, Neda Abedian-Dehaghani, Majid M. Heravi   +2 more
doaj   +1 more source

Heterogenisation of ketone catalysts within mesoporous supports for asymmetric epoxidation

, 2013
The synthesis of the first mesoporous silica (150 Å) anchored carbohydrate-derived chiral ketone is described. This new heterogeneous catalyst has been shown to be effective in the asymmetric epoxidation of olefins by oxone.
Adam, Aggarwal, Amadori, Amadori, Armstrong, Beckwith, Bellamy, Bloch, Caprio, Chadwick, Cho, Corey, Denmark, Denmark, Denmark, Dondoni, Farina, Frohn, Goeddel, Heitbaum, Hutchings, Jacobsen, Johansson Seechurn, Johnson, Johnson, Jones, Katsuki, McMorn, Page, Page, Pedragosa-Moreau, Raja, Raynor, Ren, Romesberg, Ross, Sartori, Shephard, Shu, Song, Stearman, Thomas, Thomas, Thomas, Tian, Tian, Tian, van den Broek, Wang, Wang, Wang, Wang, Wong, Wong, Xia, Xiong, Xuereb, Yang, Yang, Zhao, Zhu   +60 more
core   +1 more source

Cellulose Depolymerization over Heterogeneous Catalysts [PDF]

Accounts of Chemical Research, 2018
Cellulosic biomass is the largest source of renewable organic carbon on our planet. Cellulose accounts for 40-50 wt % of this lignocellulose, and it is a feedstock for industrially important chemicals and fuels. The first step in cellulose conversion involves its depolymerization to glucose or to its hydrogenated product sorbitol.
Abhijit Shrotri, Hirokazu Kobayashi, Atsushi Fukuoka   +2 more
openaire   +2 more sources

Polymer-supported chiral palladium-based complexes as efficient heterogeneous catalysts for asymmetric reductive Heck reaction

Green Synthesis and Catalysis
Heterogeneous asymmetric catalysis is an important strategy for the industrial production of chiral compounds. Herein, we reported a polymer-bound Xu-Phos-derived palladium catalyst that shows good performance in heterogeneous asymmetric reductive Heck ...
Hui Zhang, Bing Xu, Liejin Zhou, Zhan-Ming Zhang, Junliang Zhang   +4 more
doaj   +1 more source

Mixed-metal MIL-100(Sc,M) (M=Al, Cr, Fe) for Lewis acid catalysis and tandem C−C bond formation and alcohol oxidation [PDF]

, 2014
The authors thank Johnson Matthey and the EPSRC for an Industrial CASE award to L.M. We gratefully acknowledge the IAESTE UK for a scholarship to B.E.
Acerbi, Nadia, Anderson, Amanda Elizabeth, Ashbrook, Sharon Elizabeth, Clarke, Matthew L., Daniels, Luke, Ehrlichova, Barbora, Mitchell, Laura, Seymour, Valerie Ruth, Walton, Richard, Williamson, Patrick, Wright, Paul Anthony   +10 more
core   +1 more source

Nanostructured Heterogeneous Catalysts for Bioorthogonal Reactions

Angewandte Chemie, 2023
AbstractBioorthogonal chemistry has inspired a new subarea of chemistry providing a powerful tool to perform novel biocompatible chemospecific reactions in living systems. Following the premise that they do not interfere with biological functions, bioorthogonal reactions are increasingly applied in biomedical research, particularly with respect to ...
Ana Sousa‐Castillo, Andrea Mariño‐López, Begoña Puértolas, Miguel A. Correa‐Duarte   +3 more
openaire   +3 more sources