scholarly journals Effect of Carbon Supported Pt Catalysts on Selective Hydrogenation of Cinnamaldehyde

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Qing Han ◽  
Yunfei Liu ◽  
Dong Wang ◽  
Fulong Yuan ◽  
Xiaoyu Niu ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Impregnation Method ◽  
Pt Catalysts ◽  
Cinnamyl Alcohol ◽  
Electronic Effects ◽  
Carbon Supports ◽  
Graphene Oxides ◽  
Graphitization Degree ◽  
Supported Pt Catalysts ◽  
Reduced Graphene

Selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) is of both fundamental and industrial interest. It is of great significance to evaluate the possible differences between different supports arising from metal dispersion and electronic effects, in terms of activity and selectivity. Herein, Pt catalysts on different carbon supports including carbon nanotubes (CNTs) and reduced graphene oxides (RGO) were developed by a simple wet impregnation method. The resultant catalysts were well characterized by XRD, Raman, N2physisorption, TEM, and XPS analysis. Applied in the hydrogenation of cinnamaldehyde, 3.5 wt% Pt/CNT shows much higher selectivity towards cinnamyl alcohol (62%) than 3.5 wt% Pt/RGO@SiO2(48%). The enhanced activity can be ascribed to the high graphitization degree of CNTs and high density of dispersed Pt electron cloud.

Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over BN-supported Pt catalysts at room temperature

2019 ◽  
Vol 578 ◽  
pp. 105-115 ◽  
Author(s):  
Zhang Cao ◽  
Jiahao Bu ◽  
Zeqin Zhong ◽  
Changyong Sun ◽  
Qingsong Zhang ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Room Temperature ◽  
Pt Catalysts ◽  
Cinnamyl Alcohol ◽  
Supported Pt Catalysts

The structure and electronic effects of ZIF-8 and ZIF-67 supported Pt catalysts for crotonaldehyde selective hydrogenation

2022 ◽  
Author(s):  
Haiyu Shen ◽  
Huahua Zhao ◽  
Jian Yang ◽  
Jun Zhao ◽  
Liang Yan ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Selective Hydrogenation ◽  
Metal Organic Frameworks ◽  
Pt Catalysts ◽  
Electronic Effects ◽  
Supported Pt Catalysts ◽  
Metal Organic

Metal organic frameworks (MOFs) have been applied to stabilize metal nanoparticles due to their excellent properties, but there are many different viewpoints about the interaction between MOF and nanoparticles, which...

scholarly journals Sulfur Resistance of Pt-W Catalysts

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Carolina P. Betti ◽  
Juan M. Badano ◽  
Ivana L. Rivas ◽  
Vanina A. Mazzieri ◽  
M. Juliana Maccarrone ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Model Compound ◽  
Pt Catalysts ◽  
Electronic Effects ◽  
Sulfur Resistance ◽  
Metal Impregnation

The sulfur resistance of low-loaded monometallic Pt catalysts and bimetallic Pt-W catalysts during the partial selective hydrogenation of styrene, a model compound of Pygas streams, was studied. The effect of metal impregnation sequence on the activity and selectivity was also evaluated. Catalysts were characterized by ICP, TPR, XRD, and XPS techniques. Catalytic tests with sulfur-free and sulfur-doped feeds were performed. All catalysts showed high selectivities (>98%) to ethylbenzene. Activity differences between the catalysts were mainly attributed to electronic effects due to the presence of different electron-rich species of Pt0and electron-deficient species ofPtδ+. Pt0promotes the cleavage of H2whilePtδ+the adsorption of styrene. The catalyst successively impregnated with W and Pt (WPt/Al) was more active and sulfur resistant than the catalyst prepared with an inverse impregnation order (PtW/Al). The higher poison resistance of WPt/Al was attributed to both steric and electronic effects.

scholarly journals The H2-Treated TiO2 Supported Pt Catalysts Prepared by Strong Electrostatic Adsorption for Liquid-Phase Selective Hydrogenation

Catalysts ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 87 ◽  
Author(s):  
Sasithorn Kuhaudomlap ◽  
Okorn Mekasuwandumrong ◽  
Piyasan Praserthdam ◽  
Shin-Ichiro Fujita ◽  
Masahiko Arai ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Selective Hydrogenation ◽  
Pt Catalysts ◽  
Electrostatic Adsorption ◽  
Strong Electrostatic Adsorption ◽  
Supported Pt Catalysts

Selective hydrogenation of C C bond over N-doped reduced graphene oxides supported Pd catalyst

2016 ◽  
Vol 180 ◽  
pp. 607-613 ◽  
Author(s):  
Renfeng Nie ◽  
Meng Miao ◽  
Weichen Du ◽  
Juanjuan Shi ◽  
Yingchun Liu ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Pd Catalyst ◽  
Graphene Oxides ◽  
Reduced Graphene ◽  
Reduced Graphene Oxides ◽  
Supported Pd

scholarly journals Selective Hydrogenation of Crotonaldehyde over ZrO2-Supported Pt Catalysts

2010 ◽  
Vol 26 (12) ◽  
pp. 3273-3277 ◽  
Author(s):  
ZHENG Hai-Ying ◽  
◽  
XIE Guan-Qun ◽  
WANG Xiao-Xia ◽  
JIN Ling-Yun ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Pt Catalysts ◽  
Supported Pt Catalysts

scholarly journals An Effective Pt-Cu/SiO2 Catalyst for the Selective Hydrogenation of Cinnamaldehyde

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Dong Wang ◽  
Yujun Zhu
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Impregnation Method ◽  
Cinnamyl Alcohol ◽  
Bimetal Catalyst

The bimetal catalyst Pt-Cu/SiO2 was prepared by the impregnation method. Its catalytic performance was investigated by the selective hydrogenation of cinnamaldehyde. Pt-Cu/SiO2 exhibited much higher selectivity (64.1%) to cinnamyl alcohol than Pt/SiO2 (3.7%), while they showed similar conversion of cinnamaldehyde. This enhancement was attributed to the increase in the amount of the Pt0 species on the Pt-Cu/SiO2 surface, which is derived from the interaction between Pt and Cu revealed by XRD and XPS.

Effective conversion of biomass-derived ethyl levulinate into γ-valerolactone over commercial zeolite supported Pt catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112477-112485 ◽  
Author(s):  
Chu-Bai Chen ◽  
Meng-Yuan Chen ◽  
Bakht Zada ◽  
Ying-Jie Ma ◽  
Long Yan ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Supported Catalysts ◽  
High Yield ◽  
Pt Catalysts ◽  
Ethyl Levulinate ◽  
Supported Pt Catalysts

Selective hydrogenation of biomass-derived ethyl levulinate into γ-valerolactone over commercial zeolite supported catalysts was performed, and high yield was obtained.

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