Heteropolycompounds as catalysts for biomass product transformations

LM Sanchez, HJ Thomas, MJ Climent… - Catalysis …, 2016 - Taylor & Francis
In this article we show a variety of biomass product transformations through catalysis by both
bulk and supported heteropolycompounds. The biomass sources considered include …

Tungstophosphoric acid immobilised in SBA-15 as an efficient heterogeneous acid catalyst for the conversion of terpenes and free fatty acids

JE Castanheiro, IM Fonseca, AM Ramos… - … and Mesoporous Materials, 2017 - Elsevier
Alkoxylation of α− pinene, β− pinene and limonene was performed in the presence of SBA-
15-occluded tungstophosphoric acid (HPW). The HPW was immobilised in SBA-15 using the …

Toward the efficient synthesis of pseudoionone from citral in a continuous-flow microreactor

F Zhou, H Liu, Z Wen, B Zhang… - Industrial & Engineering …, 2018 - ACS Publications
Pseudoionone (PI) is a well-known and widely used precursor for ionones, which have been
substantially applied in flavor, fragrance and pharmaceutical industry. The phase behavior …

Synthesis of bioadditives of fuels from biodiesel-derived glycerol by esterification with acetic acid on solid catalysts

GA Bedogni, MD Acevedo, F Aguzín… - Environmental …, 2018 - Taylor & Francis
In this paper, glycerol esterification with acetic acid (AA) was studied on several solid acid
catalysts: Al2O3, Al-MCM-41, HPA/SiO2, HBEA, Amberlyst 15 and Amberlyst 36 with the aim …

Methoxylation of α-pinene over heteropolyacids immobilized in silica

DS Pito, I Matos, IM Fonseca, AM Ramos, J Vital… - Applied Catalysis A …, 2010 - Elsevier
The methoxylation of α-pinene was studied using heteropolyacids immobilized on silica as
catalysts, at 60° C, being the α-terpinyl methyl ether the main product. Tungstophosphoric …

Molybdenum oxide modified montmorillonite K10 clay as novel solid acid for flow synthesis of ionone isomers

NH Margi, GD Yadav - Molecular Catalysis, 2021 - Elsevier
Molybdenum oxide modified montmorillonite K10 clay (Mt-K10) was developed to
synthesize ionone isomers via cyclization of pseudoionone. A fixed bed flow reactor was …

Ionone synthesis by cyclization of pseudoionone on silica-supported heteropolyacid catalysts

VK Diez, BJ Marcos, CR Apesteguia… - Applied Catalysis A …, 2009 - Elsevier
The liquid-phase cyclization of pseudoionone to ionones (α, β and γ isomers) was studied
on silica-supported heteropolyacid (HPA) catalysts containing between 18.8 and 58.5 …

Kinetic and mechanistic study of triose sugar conversion on Lewis and Brønsted acid solids

EA Pighin, JI Di Cosimo, VK Diez - Molecular Catalysis, 2018 - Elsevier
The effect of catalyst acid site nature on the reaction kinetics of the liquid-phase conversion
of dihydroxyacetone with ethanol was investigated using Brønsted and Lewis acid solids …

Synthesis of ionones on solid Brønsted acid catalysts: Effect of acid site strength on ionone isomer selectivity

VK Diez, CR Apesteguia, JI Di Cosimo - Catalysis Today, 2010 - Elsevier
The effect of Brønsted acid site strength on the liquid-phase conversion of pseudoionone to
ionone isomers (α-, β-and γ-ionone) was studied on resin Amberlyst 35W, silica-supported …

Phenol methylation on acid catalysts: study of the catalyst deactivation kinetics and mechanism

ME Sad, CL Padró, CR Apesteguia - Applied Catalysis A: General, 2014 - Elsevier
The kinetics and mechanism of coke formation and catalyst deactivation during the synthesis
of cresols from phenol methylation were investigated on SiO 2–Al 2 O 3, tungstophosphoric …