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本文用量热滴定法和电位滴定法研究了NH_4ZSM-5热分解形成HZSM-5沸石的酸性。结果表明,热分解型HZSM-5沸石酸度的形成分两个阶段;并观察到,由于阳离子的作用,在分子进入HZSM-5沸石孔道时存在空间位障的影响。
In this paper, thermal titration and potentiometric titration were used to study the acidity of NHZSM-5 pyrolyzed to form HZSM-5 zeolite. The results show that the acidity of the pyrolytic HZSM-5 zeolite is divided into two stages. It is observed that due to the action of the cations, the space barrier effect exists when the molecules enter the pores of the HZSM-5 zeolite.