Interaction of probe molecules with active sites on cobalt, copper and zinc-exchanged SAPO-18 solid acid catalysts

2003 ◽  
Vol 203 (1-2) ◽  
pp. 193-202 ◽  
Author(s):  
Chris Kladis ◽  
Suresh K. Bhargava ◽  
Deepak B. Akolekar
Keyword(s):  
Active Sites ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Probe Molecules ◽  
Copper And Zinc ◽  
Cobalt Copper

scholarly journals Investigating the role of framework topology and accessible active sites in silicoaluminophosphates for modulating acid-catalysis

2018 ◽  
Vol 8 (20) ◽  
pp. 5155-5164 ◽  
Author(s):  
Matthew E. Potter ◽  
Julija Kezina ◽  
Richard Bounds ◽  
Marina Carravetta ◽  
Thomas M. Mezza ◽  
...  
Keyword(s):  
Active Sites ◽  
Acid Catalysis ◽  
Solid Acid ◽  
Acid Sites ◽  
Beckmann Rearrangement ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

Framework topology and the acid sites significantly influence the Beckmann rearrangement, affecting the design of solid-acid catalysts.

The active sites of microporous solid acid catalysts

1997 ◽  
Vol 61 (1-4) ◽  
pp. 67-81 ◽  
Author(s):  
Rajiv Shah ◽  
Julian D. Gale ◽  
Michael C. Payne
Keyword(s):  
Active Sites ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid 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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