Ni－海泡石催化剂的热稳定性和抗毒性

Ｎｉ－海泡石催化剂的热稳定性和抗毒性曹声春，杨礼嫦，彭峰，周军，郭栋材（湖南大学化工系，长沙４１００８２）关键词镍，海泡石，负载型催化剂，耐热性，抗毒性，苯，环己烷国内外现行的苯加氢过程主要采用Ｎｉ－ＡＩ。Ｏ。催化剂．但它存在耐热性差、易中毒、活性温...

HEAT RESISTANCE AND ABILITY OF ANTI-POISONING OF Ni-SEPIOLITE CATALYST

i-sepiolite catalyst was prepared and used for the hydrogenationof benzene to cyclohexane in gas phase. The heat resistance and the ability of anti-po isoning of the catalyst were studied and the catalyst lifewas calculated by speed-up method. Repeated start up and shut downoperation tests were carried out on the catalyst. The mechanism of theprocess was approached. All of these results demonstrate that the Nisepiolite catalyst developed has higher activity, better selectivity, morepowerful anti-poisoning ability, better heat resistance performance andlonger service life than the commercial Ni-Al2O3. It is a very promisingnew supported nickel catalyst which can be applied to industry.