scholarly journals Elimination Reactions on Solid Acid Catalysts. I. A Comparison between Silica-alumina and Alumina Catalysts in the Dehydration of Ethanol by Means of the Poisoning Method

1970 ◽  
Vol 43 (7) ◽  
pp. 2245-2248 ◽  
Author(s):  
Isao Mochida ◽  
Yasuhide Anju ◽  
Akio Kato ◽  
Tetsuro Seiyama
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Silica Alumina ◽  
Elimination Reactions ◽  
Alumina Catalysts

scholarly journals Selective synthesis of thioethers in the presence of a transition-metal-free solid Lewis acid

2016 ◽  
Vol 12 ◽  
pp. 2627-2635 ◽  
Author(s):  
Federica Santoro ◽  
Matteo Mariani ◽  
Federica Zaccheria ◽  
Rinaldo Psaro ◽  
Nicoletta Ravasio
Keyword(s):  
Reaction Rate ◽  
Solid Acid ◽  
Amorphous Solid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Alumina Catalyst ◽  
Reaction Conditions ◽  
Solvent Free Conditions ◽  
Wide Range ◽  
Silica Alumina

The synthesis of thioethers starting from alcohols and thiols in the presence of amorphous solid acid catalysts is reported. A silica alumina catalyst with a very low content in alumina gave excellent results in terms of both activity and selectivity also under solvent-free conditions. The reaction rate follows the electron density of the carbinol atom in the substrate alcohol and yields up to 99% and can be obtained for a wide range of substrates under mild reaction conditions.

Corn Starch Hydrolysis by Alumina and Silica-Alumina Oxides Solid Acid Catalysts

2018 ◽  
Vol 71 (1-2) ◽  
pp. 1800144 ◽  
Author(s):  
Elizabeth Gordillo-Cruz ◽  
Daniel Gómez-Luría ◽  
Omar U. Valdés-Martínez ◽  
José A. De los Reyes-Heredia ◽  
Jose Alvarez-Ramirez ◽  
...  
Keyword(s):  
Solid Acid ◽  
Corn Starch ◽  
Solid Acid Catalysts ◽  
Starch Hydrolysis ◽  
Acid Catalysts ◽  
Silica Alumina

Synthesis of Alkyl Fructosides Using Solid Acid Catalysts. Part I: Silica-Alumina Cracking Catalysts

1996 ◽  
Vol 15 (3) ◽  
pp. 331-349 ◽  
Author(s):  
A. T.J.W. de Goede ◽  
M. P.J. van Deurzen ◽  
I. G. van der Leij ◽  
A. M. van der Heijden ◽  
J. M.A. Baas ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Silica Alumina ◽  
Cracking Catalysts

ChemInform Abstract: Synthesis of Alkyl Fructosides Using Solid Acid Catalysts. Part 1. Silica-Alumina Cracking Catalysts.

ChemInform ◽  
2010 ◽  
Vol 27 (36) ◽  
pp. no-no ◽  
Author(s):  
A. T. J. W. DE GOEDE ◽  
M. P. J. VAN DEURZEN ◽  
I. G. VAN DER LEIJ ◽  
A. M. VAN DER HEIJDEN ◽  
J. M. A. BAAS ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Silica Alumina ◽  
Cracking Catalysts

Preparation of Strong Acid Catalysts by Sulfate Treatment of Calcined Boehmite

1992 ◽  
Vol 57 (11) ◽  
pp. 2241-2247 ◽  
Author(s):  
Tomáš Hochmann ◽  
Karel Setínek
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
Aluminum Sulfate ◽  
Solid Acid ◽  
Strong Acid ◽  
Acid Strength ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Preparation Methods ◽  
Indicator Method

Solid acid catalysts with acid strength of -14.52 < H0 < -8.2 were prepared by sulfate treatment of the samples of boehmite calcined at 105-800 °C. Two preparation methods were used: impregnation of the calcined boehmite with 3.5 M H2SO4 or mixing of the boehmite samples with anhydrous aluminum sulfate, in both cases followed by calcination in nitrogen at 650 °C. The catalysts were characterized by measurements of surface area, adsorption of pyridine and benzene, acid strength measurements by the indicator method and by catalytic activity tests in the isomerization of cyclohexene, p-xylene and n-hexane. Properties of the catalysts prepared by both methods were comparable.

scholarly journals Metal–Organic Framework-Based Solid Acid Materials for Biomass Upgrade

2021 ◽  
Author(s):  
Yutian Qin ◽  
Jun Guo ◽  
Meiting Zhao
Keyword(s):  
High Efficiency ◽  
Solid Acid ◽  
Metal Organic Framework ◽  
Acid Sites ◽  
Solid Acid Catalysts ◽  
Future Research ◽  
Acid Catalysts ◽  
Metal Organic ◽  
Biomass Transformation ◽  
Organic Framework

AbstractBiomass is a green and producible source of energy and chemicals. Hence, developing high-efficiency catalysts for biomass utilization and transformation is urgently demanded. Metal–organic framework (MOF)-based solid acid materials have been considered as promising catalysts in biomass transformation. In this review, we first introduce the genre of Lewis acid and Brønsted acid sites commonly generated in MOFs or MOF-based composites. Then, the methods for the generation and adjustment of corresponding acid sites are overviewed. Next, the catalytic applications of MOF-based solid acid materials in various biomass transformation reactions are summarized and discussed. Furthermore, based on our personal insights, the challenges and outlook on the future development of MOF-based solid acid catalysts are provided. We hope that this review will provide an instructive roadmap for future research on MOFs and MOF-based composites for biomass transformation.

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