Role of the Feed Gas on the Selective Catalytic Dehydrogenation of Benzyl Alcohol over Cu/Hydrotalcite Catalyst

2018 ◽  
Vol 3 (28) ◽  
pp. 8277-8284 ◽  
Author(s):  
Venkata Ramesh Babu Gurram ◽  
Siva Sankar Enumula ◽  
Murali Kondeboina ◽  
Kumara Swamy Koppadi ◽  
David Raju Burri ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Catalytic Dehydrogenation

scholarly journals A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

Catalysts ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 20
Author(s):  
Seyed Sepehr Moeini ◽  
Umberto Pasqual Laverdura ◽  
Eleonora Marconi ◽  
Nicola Lisi ◽  
Emanuele Serra ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Aerobic Oxidation ◽  
Critical Role ◽  
Chemical Properties ◽  
Catalytic Performance ◽  
Pure Oxygen ◽  
Noble Metal Catalysts ◽  
Functionalized Mesoporous Silica ◽  
Oxidation Of Benzyl Alcohol

Catalytic aerobic oxidation of benzyl alcohol (BnOH) to benzaldehyde (PhCHO) over supported noble metal catalysts has grabbed the attention of researchers due to the critical role of PhCHO in numerous industrial syntheses. In the present study, a novel catalyst, Pd-P alloy supported on aminopropyl-functionalized mesoporous silica (NH2-SiO2), was prepared through in situ reduction and characterized by BET-BJH analysis, SEM, TEM, XRD, FTIR, TG-DTA, and XPS. Chemical properties and catalytic performance of Pd-P/NH2-SiO2 were compared with those of Pd0 nanoparticles (NPs) deposited on the same support. Over Pd-P/NH2-SiO2, the BnOH conversion to PhCHO was much higher than over Pd0/NH2-SiO2, and significantly influenced by the nature of solvent, reaching 57% in toluene at 111 °C, with 63% selectivity. Using pure oxygen as an oxidant in the same conditions, the BnOH conversion increased up to 78%, with 66% selectivity. The role of phosphorous in improving the activity may consist of the strong interaction with Pd that favours metal dispersion and lowers Pd electron density.

scholarly journals Nanoporous Crystalline Composite Aerogels with Reduced Graphene Oxide

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5241
Author(s):  
Christophe Daniel ◽  
Baku Nagendra ◽  
Maria Rosaria Acocella ◽  
Esther Cascone ◽  
Gaetano Guerra
Keyword(s):  
Graphene Oxide ◽  
Benzyl Alcohol ◽  
Reduced Graphene Oxide ◽  
High Surface ◽  
High Porosity ◽  
Surface Areas ◽  
Reduced Graphene ◽  
Fibrillar Morphology ◽  
Composite Aerogels

High-porosity monolithic composite aerogels of syndiotactic polystyrene (sPS) and poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) containing reduced graphene oxide (r-GO) were prepared and characterized. The composite aerogels obtained by supercritical carbon dioxide (scCO2) extraction of sPS/r-GO and PPO/r-GO gels were characterized by a fibrillar morphology, which ensured good handling properties. The polymer nanoporous crystalline phases obtained within the aerogels led to high surface areas with values up to 440 m2 g−1. The role of r-GO in aerogels was studied in terms of catalytic activity by exploring the oxidation capacity of composite PPO and sPS aerogels toward benzyl alcohol in diluted aqueous solutions. The results showed that, unlike sPS/r-GO aerogels, PPO/r-GO aerogels were capable of absorbing benzyl alcohol from the diluted solutions, and that oxidation of c.a. 50% of the sorbed benzyl alcohol molecules into benzoic acid occurred.

Decoupling the role of carbon counterparts in Pickering emulsifier for an enhanced selective oxidation of benzyl alcohol

2020 ◽  
Vol 22 (17) ◽  
pp. 5711-5721
Author(s):  
Lin Ni ◽  
Chang Yu ◽  
Qianbing Wei ◽  
Jiangwei Chang ◽  
Jieshan Qiu
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Alcohol Oxidation ◽  
Oxidation Of Benzyl Alcohol

Amphiphilic carbon-zeolite nanocomposites with good emulsion capability are configured for enhanced alcohol oxidation.

The synergistic role of the support surface and Au–Cu alloys in a plasmonic Au–Cu@LDH photocatalyst for the oxidative esterification of benzyl alcohol with methanol

2020 ◽  
Vol 22 (3) ◽  
pp. 1655-1664 ◽  
Author(s):  
Xiaoyu Wang ◽  
Ruiyi Wang ◽  
Jie Wang ◽  
Chaoyang Fan ◽  
Zhanfeng Zheng
Keyword(s):  
Benzyl Alcohol ◽  
Support Surface ◽  
Acid Base ◽  
Base Pairs ◽  
Oxidative Esterification ◽  
Cu Alloy ◽  
Cu Alloys

The acid–base pairs of the support synergistic with Au–Cu alloy NPs could drive the oxidative esterification of benzyl alcohol with methanol.

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