The stability of LiNiLaO/gamma-Al2O3 catalyst for partial oxidation of methane to syngas

The catalytic performance, thermal stability, carbon deposition, crystal ph ase, catalyst surface composition, pare volume and specific surface area we re investigated using a series of characterization techniques including fix ed-bed microreactor, TG, XRD, XPS, TPR and BET. The results indicated that LiNiLaO/gamma . Al2O3 catalyst was quite stable during the 200 h life-test at 1 123 K. CH4 conversion and CO selectivity kept exceeding 96.00%, respec tively, at CH4/O-2 ratio of 1.96 and space velocity of 27 000 l/(kg.h). The catalyst not only had excellent carbon deposition resistance, comparativel y stable pore structure and stable crystal phase, but also the active cente r nickel did not react with the support to produce compound (NiAl2O4) durin g high temperature reaction.