scholarly journals Nanodispersed Ni-catalysts with Additives in Partial Oxidation of Methane

2009 ◽  
Vol 12 (1) ◽  
pp. 31
Author(s):  
N.A. Zakarina ◽  
G.V. Akulova ◽  
Ju.M. Arinkin
Keyword(s):  
Catalytic Activity ◽  
Partial Oxidation ◽  
Synthesis Gas ◽  
Partial Oxidation Of Methane ◽  
Reduced Form ◽  
Methane Partial Oxidation ◽  
Ni Catalysts ◽  
Oxidation Of Methane

Catalytic activity of Ni-Zn-surface-skeletal catalysts modi ed by Rh, Au, Ti, Mo and W in the reaction of methane partial oxidation has been studied. In uence of catalysts of conditions preparation on its catalytic activity was researched. It was shown that introduction of additives in Ni-Zn catalysts promote to increasing of activity in the process of methane partial oxidation to synthesis-gas and thermostability of skeletal Nicatalysts thanks to the change of its faseous composition and the predominance of reduced form of Ni in catalysts structure.

Reaction mechanism of partial oxidation of methane to synthesis gas over supported ni catalysts

2003 ◽  
Vol 20 (6) ◽  
pp. 1023-1025 ◽  
Author(s):  
Sang-Bum Kim ◽  
Young-Kook Kim ◽  
Yun-Su Lim ◽  
Myung-Soo Kim ◽  
Hyun-Sik Hahm
Keyword(s):  
Reaction Mechanism ◽  
Partial Oxidation ◽  
Synthesis Gas ◽  
Partial Oxidation Of Methane ◽  
Ni Catalysts ◽  
Oxidation Of Methane ◽  
Supported Ni Catalysts ◽  
Supported Ni

Chemical looping beyond combustion: production of synthesis gas via chemical looping partial oxidation of methane

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47254-47267 ◽  
Author(s):  
Saurabh Bhavsar ◽  
Götz Veser
Keyword(s):  
Partial Oxidation ◽  
Synthesis Gas ◽  
Partial Oxidation Of Methane ◽  
Methane Partial Oxidation ◽  
Chemical Looping ◽  
Oxidation Of Methane ◽  
Systematic Development

Systematic development of Fe–Ni bimetallic carrier results in efficient and safe chemical looping process for methane partial oxidation to syngas.

scholarly journals Oscillatory Behaviour of Ni Supported on ZrO2 in the Catalytic Partial Oxidation of Methane as Determined by Activation Procedure

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2495
Author(s):  
Daniela Pietrogiacomi ◽  
Maria Cristina Campa ◽  
Ida Pettiti ◽  
Simonetta Tuti ◽  
Giulia Luccisano ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Partial Oxidation ◽  
Active Sites ◽  
Direct Reduction ◽  
Partial Oxidation Of Methane ◽  
Catalytic Partial Oxidation ◽  
Oxidation Of Methane ◽  
Short Contact Time ◽  
Oxidation Reduction ◽  
Ni Species

Ni/ZrO2 catalysts, active and selective for the catalytic partial oxidation of methane to syngas (CH4-CPO), were prepared by the dry impregnation of zirconium oxyhydroxide (Zhy) or monoclinic ZrO2 (Zm), calcination at 1173 K and activation by different procedures: oxidation-reduction (ox-red) or direct reduction (red). The characterization included XRD, FESEM, in situ FTIR and Raman spectroscopies, TPR, and specific surface area measurements. Catalytic activity experiments were carried out in a flow apparatus with a mixture of CH4:O2 = 2:1 in a short contact time. Compared to Zm, Zhy favoured the formation of smaller NiO particles, implying a higher number of Ni sites strongly interacting with the support. In all the activated Ni/ZrO2 catalysts, the Ni–ZrO2 interaction was strong enough to limit Ni aggregation during the catalytic runs. The catalytic activity depended on the activation procedures; the ox-red treatment yielded very active and stable catalysts, whereas the red treatment yielded catalysts with oscillating activity, ascribed to the formation of Niδ+ carbide-like species. The results suggested that Ni dispersion was not the main factor affecting the activity, and that active sites for CH4-CPO could be Ni species at the boundary of the metal particles in a specific configuration and nuclearity.

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