Abstract

Features of propane conversion in the presence of rare-earth metal vanadite and vanadate, both produced via solid-phase synthesis, are studied. It is shown that MeVO₃ catalyzes mainly the propane cracking process to form methane and ethylene, while MeVO₄ equally accelerates both cracking and dehydrogenation of propane. The thermal stability of MeVO₄ in a hydrogen atmosphere is studied by a temperature-programmed reduction, while the MeVO₃ stability in an oxidizing environment is studied by DTA. Energies of activation for the MeVO₃ reduction and the MeVO₄ oxidation are calculated using the Kissinger method.

中文翻译：

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MeVO x（Me = La，Sm，Er）过渡催化体系中脱氢和丙烷分解的特殊性

摘要

研究了通过固相合成产生的稀土金属钒酸盐和钒酸盐存在下丙烷的转化特征。结果表明，MeVO ₃主要催化丙烷裂解反应生成甲烷和乙烯，而MeVO _4则同时促进丙烷裂解和脱氢反应。通过程序升温还原研究了MeVO ₄在氢气氛中的热稳定性，同时通过DTA研究了在氧化环境中MeVO _3的稳定性。使用Kissinger方法计算MeVO ₃还原和MeVO ₄氧化的活化能。