A comparison of the catalytic partial oxidation of C1 to C16 normal paraffins

AIChE Journal ◽  
2006 ◽  
Vol 53 (1) ◽  
pp. 187-195 ◽  
Author(s):  
G. J. Panuccio ◽  
B. J. Dreyer ◽  
L. D. Schmidt
Keyword(s):  
Partial Oxidation ◽  
Catalytic Partial Oxidation

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.

Non-Premixed Reactive Volatilization Reactor for Catalytic Partial Oxidation of Low Volatility Fuels at a Short Contact Time

2021 ◽  
Author(s):  
Ying Lin ◽  
Xuesong Li ◽  
Martyn Twigg ◽  
William F Northrop
Keyword(s):  
Partial Oxidation ◽  
Contact Time ◽  
Catalytic Partial Oxidation ◽  
Liquid Hydrocarbons ◽  
Short Contact ◽  
Short Contact Time ◽  
Opposed Flow

This work presents a novel non-premixed opposed-flow reactive volatilization reactor that simultaneously vaporizes and partially oxidizes low volatility liquid hydrocarbons at a short contact time (<12 ms). In the reactor,...

Catalytic Partial Oxidation of Coke Oven Gas to Syngas over Ni/SiO2 Catalyst Modified by Rare Earth Metal Oxide in a Membrane Reactor

2010 ◽  
Vol 156-157 ◽  
pp. 1024-1028
Author(s):  
Da Hai Hu ◽  
Xiong Gang Lu ◽  
Hong Wei Cheng ◽  
Wei Zhong Ding
Keyword(s):  
Rare Earth ◽  
Partial Oxidation ◽  
Membrane Reactor ◽  
Coke Oven ◽  
Oxygen Permeation ◽  
Catalytic Partial Oxidation ◽  
Permeation Flux ◽  
Coke Oven Gas ◽  
Permeable Membrane ◽  
Oxygen Permeation Flux

The performance of Ni/SiO2 Catalysts modified by La2O3, ZrO2 and CeO2 were tested in a BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) membrane reactor by catalytic partial oxidation of coke oven gas (COG) under atmospheric pressure. The results show that the oxygen permeation flux increased dramatically with Ni/RxOy/SiO2 (R = La, Zr or Ce) catalysts by adding the element of rare earth especially the La during the reforming reaction. At optimized reaction conditions, the dense oxygen permeable membrane had an oxygen permeation flux around 16.4 ml/cm2•min and a CH4 conversion of 99.2% have been achieved at 900 oC.

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