In Situ XRD, XPS, TEM, and TPR Study of Highly Active in CO Oxidation CuO Nanopowders

2013 ◽  
Vol 117 (28) ◽  
pp. 14588-14599 ◽  
Author(s):  
Dmitry A. Svintsitskiy ◽  
Tatyana Yu. Kardash ◽  
Olga A. Stonkus ◽  
Elena M. Slavinskaya ◽  
Andrey I. Stadnichenko ◽  
...  
Keyword(s):  
Co Oxidation ◽  
In Situ Xrd ◽  
Highly Active ◽  
Cuo Nanopowders

In situ XRD, Raman, and TPR studies of CuO/Al2O3 catalysts for CO oxidation

2005 ◽  
Vol 239 (1-2) ◽  
pp. 243-248 ◽  
Author(s):  
Meng-Fei Luo ◽  
Ping Fang ◽  
Mai He ◽  
Yun-Long Xie
Keyword(s):  
Co Oxidation ◽  
In Situ Xrd

scholarly journals In situ XRD and EXAFS/XANES study of xCuO–yAl2O3–zFe2O3 catalyst in reaction of CO oxidation

2018 ◽  
Vol 74 (a2) ◽  
pp. e377-e378
Author(s):  
Olga Bulavchenko ◽  
Zahar Vinokurov ◽  
Andrey Saraev ◽  
Vasily Kaichev ◽  
Alexander Fedorov ◽  
...  
Keyword(s):  
Co Oxidation ◽  
In Situ Xrd

scholarly journals Structural changes of Au–Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations

2011 ◽  
Vol 278 (2) ◽  
pp. 288-296 ◽  
Author(s):  
Xiaoyan Liu ◽  
Aiqin Wang ◽  
Lin Li ◽  
Tao Zhang ◽  
Chung-Yuan Mou ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Bimetallic Catalysts ◽  
Structural Changes ◽  
In Situ Xrd ◽  
Ft Ir

scholarly journals Inverse ZrO2/Cu as a highly efficient methanol synthesis catalyst from CO2 hydrogenation

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Congyi Wu ◽  
Lili Lin ◽  
Jinjia Liu ◽  
Jingpeng Zhang ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Formation Rate ◽  
Value Added ◽  
Precipitation Method ◽  
Intrinsic Activity ◽  
In Situ Xrd ◽  
Highly Active ◽  
Methanol Formation ◽  
Cu Catalysts

AbstractEnhancing the intrinsic activity and space time yield of Cu based heterogeneous methanol synthesis catalysts through CO2 hydrogenation is one of the major topics in CO2 conversion into value-added liquid fuels and chemicals. Here we report inverse ZrO2/Cu catalysts with a tunable Zr/Cu ratio have been prepared via an oxalate co-precipitation method, showing excellent performance for CO2 hydrogenation to methanol. Under optimal condition, the catalyst composed by 10% of ZrO2 supported over 90% of Cu exhibits the highest mass-specific methanol formation rate of 524 gMeOHkgcat−1h−1 at 220 °C, 3.3 times higher than the activity of traditional Cu/ZrO2 catalysts (159 gMeOHkgcat−1h−1). In situ XRD-PDF, XAFS and AP-XPS structural studies reveal that the inverse ZrO2/Cu catalysts are composed of islands of partially reduced 1–2 nm amorphous ZrO2 supported over metallic Cu particles. The ZrO2 islands are highly active for the CO2 activation. Meanwhile, an intermediate of formate adsorbed on the Cu at 1350 cm−1 is discovered by the in situ DRIFTS. This formate intermediate exhibits fast hydrogenation conversion to methoxy. The activation of CO2 and hydrogenation of all the surface oxygenate intermediates are significantly accelerated over the inverse ZrO2/Cu configuration, accounting for the excellent methanol formation activity observed.

Active yet extremely durable Co3O4 spheroids of different texture without/with Au deposition for CO oxidation

2015 ◽  
Vol 5 (2) ◽  
pp. 1065-1075 ◽  
Author(s):  
Y. Yao ◽  
Q. Su ◽  
X. Z. Feng ◽  
B. Sun ◽  
W. J. Ji ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Activity ◽  
Highly Active ◽  
Shell Type

Co3O4 spheroids of different texture without/with Au deposition were highly active yet very durable at 60–90 °C for CO oxidation. The calcined Co3O4-based catalysts and the yolk–shell type one were even more durable. The catalysts encountered obvious enhancement in CO oxidation activity via in situ pretreatment.

In Situ Phase Separation of NiAu Alloy Nanoparticles for Preparing Highly Active Au/NiO CO Oxidation Catalysts

ChemPhysChem ◽  
2008 ◽  
Vol 9 (17) ◽  
pp. 2475-2479 ◽  
Author(s):  
Shenghu Zhou ◽  
Hongfeng Yin ◽  
Viviane Schwartz ◽  
Zili Wu ◽  
David Mullins ◽  
...  
Keyword(s):  
Phase Separation ◽  
Co Oxidation ◽  
Alloy Nanoparticles ◽  
Oxidation Catalysts ◽  
Highly Active

An Au22(L8)6 nanocluster with in situ uncoordinated Au as a highly active catalyst for O2 activation and CO oxidation

2019 ◽  
Vol 21 (36) ◽  
pp. 20144-20150 ◽  
Author(s):  
Fuhua Li ◽  
Qing Tang
Keyword(s):  
Co Oxidation ◽  
Active Catalyst ◽  
O2 Activation ◽  
Highly Active

The in situ uncoordinated Au at the interface of the Au22(L8)6 nanocluster is catalytically effective for O2 activation and CO oxidation.

Influence of CO oxidation conditions on the Mn-Zr oxide catalyst structure: In situ XRD and MS study

2020 ◽  
Vol 258 ◽  
pp. 126768
Author(s):  
O.A. Bulavchenko ◽  
Z.S. Vinokurov ◽  
T.N. Afonasenko ◽  
S.V. Tsybulya
Keyword(s):  
Co Oxidation ◽  
Oxide Catalyst ◽  
Catalyst Structure ◽  
In Situ Xrd

In Situ Activated Co3–xNixO4 as a Highly Active and Ultrastable Electrocatalyst for Hydrogen Generation

ACS Catalysis ◽  
2021 ◽  
pp. 8174-8182
Author(s):  
Kailu Guo ◽  
Yantao Wang ◽  
Junfeng Huang ◽  
Min Lu ◽  
Hua Li ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Highly Active
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