【摘要】 对比了SO₄^2-/Zr O₂-Al₂O₃（SZA）催化剂和H-USY分子筛的物性结构,并在固定床微型反应装置上考察了2种催化剂酸性质对正丁烷异构化反应的影响。结果表明:H-USY分子筛的比表面积和孔体积明显高于SZA催化剂;SZA催化剂在150～250℃可催化正丁烷发生异构化反应,并以单分子反应为主,而H-USY分子筛在350～450℃才能催化正丁烷发生异构化反应,且单/双分子反应机理并存;SZA催化剂的失活速率明显大于H-USY分子筛,但其表面积炭量少于H-USY分子筛。更多还原

【Abstract】 The physical structures of SO₄^2-/Zr O₂-Al₂O₃（SZA）catalyst and H-USY zeolite were comparatively studied,and the effects of acid properties of two catalysts on properties of n-butane isomerization were investigated on a fixed bed micro-reactor.The results showed that the specific surface area and pore volume of H-USY zeolite were obviously larger than those of SZA catalyst;SZA catalyst at 150-250℃ could catalyze n-butane resulting in isomerization,mainly in monomolecular,while H-USY zeolite at 350-450℃ could catalyze n-butane leading to isomerization,and the reaction mechanisms of monomolecular and bimolecular coexisted.Furthermore,SZA catalyst with lower amount of coke deposits had higher deactivation rate,compared with that of H-USY zeolite.更多还原