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研究了自制固体酸催化剂HPW-NiSO_4/γ-Al_2O_3在甲基叔戊基醚(TAME)裂解制备异戊烯反应中的应用。结果表明,用HPW改性的NiSO_4/γ-Al_2O_3催化剂能够使TAME的转化率达99%以上,且无二甲醚生成。通过XRD、NH3-TPD和FTIR对该催化剂进行表征,结果表明,HPW、NiSO_4高度分散在载体表面且具有良好的催化稳定性,催化剂上含有B酸、L酸,合适的CB/CL能促进TAME裂解和抑制副产物二甲醚生成。
The application of self-made solid acid catalyst HPW-NiSO 4 / γ-Al 2 O 3 in the isopentene reaction of methyl t-amyl ether (TAME) was studied. The results showed that the conversion rate of TAME was over 99% with NiSO_4 / γ-Al_2O_3 modified by HPW, and no DME was formed. The catalysts were characterized by XRD, NH3-TPD and FTIR. The results showed that HPW and NiSO 4 are highly dispersed on the surface of the support and have good catalytic stability. The catalyst contains B acid and L acid, and suitable CB / CL can promote TAME Pyrolysis and inhibition by-product of dimethyl ether formation.