Oxidative coupling of methane in a dual-bed reactor comprising of particle/cordierite monolithic catalysts

2010 ◽  
Vol 19 (6) ◽  
pp. 600-604 ◽  
Author(s):  
Deng Pan ◽  
Shengfu Ji ◽  
Wenhua Wang ◽  
Chengyue Li
Keyword(s):  
Oxidative Coupling ◽  
Oxidative Coupling Of Methane ◽  
Monolithic Catalysts ◽  
Dual Bed

Particle/Cordierite Monolithic Catalysts Dual-bed Reactor with Beds-interspace Supplementary Oxygen and Performance for Oxidative Coupling of Methane

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Shengfu Ji ◽  
Wenhua Wang
Keyword(s):  
Oxidative Coupling ◽  
Chemical Reactor ◽  
Catalytic Performance ◽  
Oxidative Coupling Of Methane ◽  
Supplementary Oxygen ◽  
Sio2 Particle ◽  
Monolithic Catalysts ◽  
And Performance ◽  
Dual Bed

Abstract A novel dual-bed reactor comprising of the upper-layer Na2WO4-Mn/SiO2 particle catalysts and the under-layer Na3PO4-Mn/SiO2/cordierite monolithic catalysts with beds-interspace supplementary oxygen was constructed for oxidative coupling of methane (OCM). The catalytic performance of OCM in the dual-bed reactor was remarkably improved compared with that in the previously reported chemical reactor for OCM.

Preparation of monolithic catalysts using 3D printed templates for oxidative coupling of methane

2016 ◽  
Vol 4 (48) ◽  
pp. 18753-18756 ◽  
Author(s):  
P. Michorczyk ◽  
E. Hędrzak ◽  
A. Węgrzyniak
Keyword(s):  
Oxidative Coupling ◽  
Rational Design ◽  
Oxidative Coupling Of Methane ◽  
Monolithic Catalysts ◽  
3D Printed

We report the rational design and successful preparation of monolithic catalysts with the assistance of 3D printed templates for oxidative coupling of methane (OCM).

Preparation of Li/MgO Monolithic Catalysts and their Performance for Oxidative Coupling of Methane

2014 ◽  
Vol 1004-1005 ◽  
pp. 648-652 ◽  
Author(s):  
Zhao Zhang ◽  
Sheng Fu Ji
Keyword(s):  
Oxidative Coupling ◽  
Oxidative Coupling Of Methane ◽  
Impregnation Method ◽  
Reaction Conditions ◽  
Monolithic Catalyst ◽  
Monolithic Catalysts

A series of Li/MgO/Al2O3/FeCrAl monolithic catalyst with different Li contents were prepared by a wetness impregnation method. The effects of Li contents in the catalysts and reaction conditions such as GHSV and CH4/O2 on the OCM reaction were investigated. The results show that the conversion of CH4 and selectivity of C2 was 38.3% and 27.1%, respectively, which were obtained on the 5%Li/MgO/Al2O3/FeCrAl monolithic catalysts at 850 oC with a GHSV of 24000 mL·g-1·h-1 and CH4/O2 of 2.

Dual-bed strategies to improve hydrocarbon yields in the oxidative coupling of methane

1994 ◽  
Vol 5 (1-2) ◽  
pp. 71-88 ◽  
Author(s):  
Rajesh D. Samarth ◽  
Shang-Yang Chen ◽  
Kerry M. Dooley
Keyword(s):  
Oxidative Coupling ◽  
Oxidative Coupling Of Methane ◽  
Dual Bed

scholarly journals Identification of the structure of the Bi promoted Pt non-oxidative coupling of methane catalyst: a nanoscale Pt3Bi intermetallic alloy

2019 ◽  
Vol 9 (6) ◽  
pp. 1349-1356 ◽  
Author(s):  
Johnny Zhu Chen ◽  
Zhenwei Wu ◽  
Xiaoben Zhang ◽  
Slgi Choi ◽  
Yang Xiao ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Oxidative Coupling Of Methane ◽  
Intermetallic Alloy ◽  
Alloy Catalyst

Identification of a Pt3Bi nanoscale, surface intermetallic alloy catalyst for non-oxidative coupling of methane (NOCM).

Catalytic performance of Na-Mn2O3-based catalysts towards oxidative coupling of methane

2021 ◽  
Author(s):  
P. Saychu ◽  
M. Thanasiriruk ◽  
C. Khajonvittayakul ◽  
R. Viratikul ◽  
V. Tongnan ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Catalytic Performance ◽  
Oxidative Coupling Of Methane

scholarly journals Nanosheet-Like Ho2O3 and Sr-Ho2O3 Catalysts for Oxidative Coupling of Methane

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 388
Author(s):  
Yuqiao Fan ◽  
Changxi Miao ◽  
Yinghong Yue ◽  
Weiming Hua ◽  
Zi Gao
Keyword(s):  
Oxidative Coupling ◽  
Temperature Programmed Desorption ◽  
Oxidative Coupling Of Methane ◽  
Molar Ratio ◽  
Impregnation Method ◽  
Oxygen Species ◽  
N2 Adsorption ◽  
Basic Sites ◽  
Chemisorbed Oxygen ◽  
Temperature Programmed

In this work, Ho2O3 nanosheets were synthesized by a hydrothermal method. A series of Sr-modified Ho2O3 nanosheets (Sr-Ho2O3-NS) with a Sr/Ho molar ratio between 0.02 and 0.06 were prepared via an impregnation method. These catalysts were characterized by several techniques such as XRD, N2 adsorption, SEM, TEM, XPS, O2-TPD (temperature-programmed desorption), and CO2-TPD, and they were studied with respect to their performances in the oxidative coupling of methane (OCM). In contrast to Ho2O3 nanoparticles, Ho2O3 nanosheets display greater CH4 conversion and C2-C3 selectivity, which could be related to the preferentially exposed (222) facet on the surface of the latter catalyst. The incorporation of small amounts of Sr into Ho2O3 nanosheets leads to a higher ratio of (O− + O2−)/O2− as well as an enhanced amount of chemisorbed oxygen species and moderate basic sites, which in turn improves the OCM performance. The optimal catalytic behavior is achievable on the 0.04Sr-Ho2O3-NS catalyst with a Sr/Ho molar ratio of 0.04, which gives a 24.0% conversion of CH4 with 56.7% selectivity to C2-C3 at 650 °C. The C2-C3 yield is well correlated with the amount of moderate basic sites present on the catalysts.

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