The research result shows that large pore have been increased in the matrix with the method of shallow acidizing, and the ultra stable zeolite rich of secondary pores can match the active matrix.

• 研究结果表明,使用浅度酸化的方法可以增加基质中大孔所占比例;具有丰富二级孔的超稳分子筛可与活性基质相匹配,使催化剂具有梯度的孔分布。