Efficient and selective hydrogenation of benzonitrile to benzylamine: improvement on catalytic performance and stability in a trickle-bed reactor

2017 ◽  
Vol 41 (10) ◽  
pp. 3758-3765 ◽  
Author(s):  
Chengyong Dai ◽  
Shuya Zhu ◽  
Xueguang Wang ◽  
Chunlei Zhang ◽  
Wenxiang Zhang ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Trickle Bed Reactor ◽  
Trickle Bed

The hydrogenation of benzonitrile with a high benzylamine yield of 86% is accomplished over a Pd/γ-Al2O3 catalyst in a trickle-bed reactor.

Selective Hydrogenation of 1-Heptyne in a Mini Trickle Bed Reactor

2011 ◽  
Vol 51 (26) ◽  
pp. 8815-8825 ◽  
Author(s):  
Mansour Al-Herz ◽  
Mark J. H. Simmons ◽  
Joseph Wood
Keyword(s):  
Selective Hydrogenation ◽  
Trickle Bed Reactor ◽  
Trickle Bed

Hydrogenation of Ethylbenzene Over Ru/γ-Al2O3 Catalyst in Trickle-Bed Reactor

2021 ◽  
Vol 21 (7) ◽  
pp. 4116-4120
Author(s):  
Seung Kyo Oh ◽  
Huiji Ku ◽  
Gi Bo Han ◽  
Byunghun Jeong ◽  
Young-Kwon Park ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Active Sites ◽  
Catalytic Performance ◽  
Hydrogenation Reaction ◽  
Impregnation Method ◽  
Average Pore ◽  
Wet Impregnation ◽  
Trickle Bed Reactor ◽  
Liquid Phase Hydrogenation ◽  
Trickle Bed

The objective of this study is to evaluate the catalytic performance of pellet-type Ru/γ-Al2O3 as a catalyst during liquid-phase hydrogenation of the aromatic hydrocarbon. The Ru/γ-Al2O3 catalyst was prepared using a wet impregnation method. After adding a binder to Ru/γ-Al2O3, a pellet-type catalyst was obtained through an extrusion method. Nanoporous structures are well developed in the pellet-type Ru/γ-Al2O3 catalyst. The average pore sizes of the Ru/γ-Al2O3 catalysts were approximately 10 nm. The catalytic performance of the pellet-type Ru/γ-Al2O3 catalyst during ethylbenzene hydrogenation was evaluated in a trickle-bed reactor. When the ruthenium loading increased from 1 to 5 wt%, the number of active sites effective for the hydrogenation of ethylbenzene increased proportionally. In order to maximize the conversion of ethylbenzene to ethylcyclohexane, it was necessary to maintain a liquid phase hydrogenation reaction in the trickle bed reactor. In this regards, the reaction temperature should be lower than 90 °C. The conversion of ethylbenzene to ethylcyclohexane on the Ru(5 wt%)/γ-Al2O3 catalyst was highest, which is ascribed to the largest number of active sites of the catalyst.

Catalytic performance improvement of styrene hydrogenation in trickle bed reactor by using periodic operation

2013 ◽  
Vol 30 (3) ◽  
pp. 593-597 ◽  
Author(s):  
Atittahn Wongkia ◽  
Kongkiat Suriye ◽  
Anuwat Nonkhamwong ◽  
Piyasan Praserthdam ◽  
Suttichai Assabumrungrat
Keyword(s):  
Performance Improvement ◽  
Catalytic Performance ◽  
Periodic Operation ◽  
Trickle Bed Reactor ◽  
Trickle Bed ◽  
Styrene Hydrogenation

Wall flow in trickle bed reactor

1975 ◽  
Vol 40 (10) ◽  
pp. 3145-3152 ◽  
Author(s):  
J. Prchlík ◽  
J. Soukup ◽  
V. Zapletal ◽  
V. Růžička ◽  
P. Kovařík
Keyword(s):  
Trickle Bed Reactor ◽  
Wall Flow ◽  
Trickle Bed

Mass Transfer Limited Wet Oxidation in Trickle-Bed Reactor

1998 ◽  
Vol 63 (11) ◽  
pp. 1938-1944 ◽  
Author(s):  
Vratislav Tukač ◽  
Jiří Vokál ◽  
Jiří Hanika
Keyword(s):  
Supported Catalyst ◽  
Reaction Rates ◽  
Gas Transfer ◽  
Wet Oxidation ◽  
Reactor Performance ◽  
Catalytic Wet Oxidation ◽  
Environmental Application ◽  
Trickle Bed Reactor ◽  
Fine Glass ◽  
Trickle Bed

Catalytic activity of CuO-supported catalyst in phenol oxidation, and the influence of reaction conditions, viz. temperature (125-170 °C), oxygen partial pressure (1-7 MPa) and liquid feed (30-760 ml h-1), in the continuous operation using 17.9 mm i.d. trickle-bed reactor is presented. The hydrodynamic impact on the three-phase trickle-bed reactor performance in an environmental application of catalytic wet oxidation was also investigated. The results of trickle-bed operation were strongly influenced by wetting efficiency. An insufficient catalyst wetting can be to compensated by filling the catalyst bed voids by fine glass spheres. In the case of the gas transfer limited reaction, a better wetting of the catalyst can lead to worse reactor performance due to lower reaction rates.

Effects of impregnation solvent and reduction temperature on the catalytic performance of Pd/Al2O3 in the selective hydrogenation of 1,3-butadiene

2011 ◽  
Vol 103 (2) ◽  
pp. 405-417 ◽  
Author(s):  
Kanda Pattamakomsan ◽  
Francisco Jose Cadete Santos Aires ◽  
Kongkiate Suriye ◽  
Joongjai Panpranot
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Reduction Temperature
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