【摘要】 通过对固体超强酸的比表面测定，差热分析及催化酯化性能考察， 研究了不同沉淀剂对固体超强酸ＳＯ４２－ ／ＴｉＯ２ － ＮｉＯ 催化剂在物性和催化性能的影响，认为尿素作沉淀剂可增强ＴｉＯ２ 与ＮｉＯ之间相互作用，抑制Ｎｉ 离子和ＳＯ４２ － 生成盐，氨水作为沉淀剂则不能促使ＴｉＯ２ 与ＮｉＯ 的强相互作用，用尿素作沉淀剂得到的催化剂比表面、稳定性要比氨水作沉淀剂时的比表面大，稳定性要高。更多还原

【Abstract】 In this article, effect of different precipitants on performance of SO 2- 4/TiO 2-NiO catalyst were described by measurement of specific surface , differential thermal analysis and catalytic esterified reaction. NiSO 4 salt was restrained from NiO and H 2SO 4 by urea as precipitants ,but it wasn’t by ammonia . Specific surface and steady of catalyst by urea as precipitant was better than by ammonia.更多还原