Benzylation of Biphenyl with Benzyl Chloride over Crystalline, Amorphous, and MCM-41 Solid Acid Catalysts

2000 ◽  
Vol 39 (5) ◽  
pp. 1209-1214 ◽  
Author(s):  
Paolo Beltrame ◽  
Giovanni Zuretti ◽  
Francesco Demartin
Keyword(s):  
Benzyl Chloride ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Mcm 41

Synthesis and Characterisation of Ordered Mesoporous Acid Catalysts for Synthesis of Biodegradable Surfactants

2003 ◽  
Vol 68 (10) ◽  
pp. 1914-1926 ◽  
Author(s):  
Marcelo Boveri ◽  
Javier Agúndez ◽  
Isabel Díaz ◽  
Joaquín Pérez-Pariente ◽  
Enrique Sastre
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Synthesis ◽  
Stearic Acid ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Synthesis Time ◽  
Ordered Mesoporous ◽  
Glycerol Esterification ◽  
Mcm 41

Solid acid catalysts based on -SO3H-grafted MCM-41 mesoporous silica were prepared as catalysts for the synthesis of biodegradable surfactants leading reactions. The influence of hydrothermal synthesis time on properties of the mesoporous matrix and catalytic activity and selectivity of the catalysts in the stearic acid-glycerol esterification were studied.

scholarly journals Green Synthesis of Benzylated Aromatics Using Iron Loaded Mesoporous Materials

2008 ◽  
Vol 5 (3) ◽  
pp. 467-472 ◽  
Author(s):  
Muthuraj Esther Leena Preethi ◽  
Shanmugam Revathi ◽  
Thiripuranthagan Sivakumar
Keyword(s):  
Green Synthesis ◽  
Mesoporous Materials ◽  
Solid Acid ◽  
Catalytic Amount ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Mcm 41

Syntheses of benzylated aromatics like diphenylmethane and its derivatives by the condensation of benzene or toluene oro-xylene with benzylchloride or 4-methylbenzylchloride in the presence of a catalytic amount of various iron loaded mesoporous solid acid catalysts such as Fe/Al-MCM-41 (Si/Al=25), Fe/Al-MCM-41 (Si/Al=50) and Fe/Al-MCM-41 (Si/Al=100) are reported.

Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol

2010 ◽  
Vol 379 (1-2) ◽  
pp. 61-68 ◽  
Author(s):  
I. Jiménez-Morales ◽  
J. Santamaría-González ◽  
P. Maireles-Torres ◽  
A. Jiménez-López
Keyword(s):  
Oleic Acid ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Mcm 41

Synthesis of niobium-doped titanate nanotubes as solid acid catalysts

2016 ◽  
Vol 6 (13) ◽  
pp. 4832-4839 ◽  
Author(s):  
Emiko Wada ◽  
Masaaki Kitano ◽  
Kazuto Yamamoto ◽  
Kiyotaka Nakajima ◽  
Shigenobu Hayashi ◽  
...  
Keyword(s):  
Benzyl Chloride ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Acid Strength ◽  
Solid Acid Catalysts ◽  
Titanate Nanotubes ◽  
Acid Catalysts ◽  
Niobium Doped ◽  
Nb Doping

Niobium-doped titanate nanotubes function as an efficient solid acid catalyst for Friedel–Crafts alkylation of toluene with benzyl chloride or benzyl alcohol. Brønsted acid strength and accessibility of reactant molecules are enhanced by Nb-doping.

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.

scholarly journals Nonthermal Plasma Induced Fabrication of Solid Acid Catalysts for Glycerol Dehydration to Acrolein

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 391
Author(s):  
Lu Liu ◽  
Xiaofei Philip Ye
Keyword(s):  
Solid Acid ◽  
Nonthermal Plasma ◽  
Temperature Programmed Desorption ◽  
Argon Atmosphere ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Pyridine Adsorption ◽  
X Ray ◽  
Glycerol Dehydration ◽  
Temperature Programmed

The feasibility of fabricating better solid acid catalysts using nonthermal plasma (NTP) technology for biobased acrolein production is demonstrated. NTP discharge exposure was integrated in catalyst fabrication in air or argon atmosphere. The fabricated catalysts were characterized by Brunauer–Emmett–Teller surface area analysis, temperature-programmed desorption of ammonia, X-ray powder diffraction and Fourier-transform infrared spectroscopy of pyridine adsorption, in comparison to regularly prepared catalysts as a control. Further, kinetic results collected via glycerol dehydration experiments were compared, and improvement in acrolein selectivity was displayed when the catalyst was fabricated in the argon NTP, but not in the air NTP. Possible mechanisms for the improvement were also discussed.

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