在NL原粉基础上，制备了具有一定稳定性的乙基化催化剂z937。
An ethylation catalyst Z937 with suitable stability were prepared on THD basis of NL.
其制备方法是以氯化铵为催化剂，原甲酸三乙酯为解水剂，由无水乙醇和环己酮缩合合成。
Cyclohexanone diethyl acetal was prepared from cyclohexanone with anhydrous ethanol as reactant, ammonium chloride as catalyst, triethyl orthoformate as water scavenger.
结果表明，新工艺制备的催化剂与原工艺产品相比，理化性能相当，裂化反应性能不低于原工艺的产品。
The new catalyst has about the same physicochemical properties, as those made by conventional technology with similar cracking activity.
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