环氧氯丙烷成胶法制备磷酸盐及其催化性质

Metal phosphates prepared by using epichlorohydrin as sol-gel agent and their catalytic properties.

对环氧氯丙烷成胶法等技术制备的金属磷酸盐进行了研究,对所制备的一系列磷酸盐用BET、XRD、IR和TG-DTA表征,比较了它们在催化反应中的酸性.结果表明,环氧氯丙烷成胶法制备得到的鳞石英型结构磷酸铝具有较强的酸性;而对于Fe3+、Ca2+,只得到相应的比表面积较小的偏磷酸盐结构化合物.

The preparation of metal phosphates by using epichlorohydrin as sol-gel agent was studied. These metal phosphates were characterized by BET、XRD、IR and TG-DTA. The results indicated that the tridymite structure of AlPO_4 with stronger acidity was prepared by using epichlorohydrin as sol-gel agent, while a kind of metaphosphate with small specific area was obtained for samples containing Fe^(3+) and Ca^(2+).