模拟硅铝催化剂上表面酸的研究(Ⅱ)-B酸存在的基本形式及硅铝比对B酸酸性的影响

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (11): 1016.

模拟硅铝催化剂上表面酸的研究(Ⅱ)-B酸存在的基本形式及硅铝比对B酸酸性的影响

封继康, 李志儒, 李松, 张武阳

吉林大学化学系

收稿日期:1985-05-24 出版日期:1986-11-24 发布日期:1986-11-24

A Study of Surface Acid on Mimic Silica-Alumina Catalyst (Ⅱ)-The Basic states of Bronsted Acid and the Influence of Silicon-Aluminium Ratio on Bronsted Acdity

Feng Jikang, Li Zhiru, Li Song, Zhang Wuyang

Department of Chemistry, Jilin University, Changchun

Received:1985-05-24 Online:1986-11-24 Published:1986-11-24

摘要/Abstract

摘要： 用EHMO方法对无定形硅铝催化剂上表面酸进行模拟计算,研究B酸存在的基本形式及硅铝比对B酸酸性的影响。结果表明氧化铝含量对B酸酸性有很大影响,Al-O-Al结构的形成是造成B酸强度下降的根本原因。计算结果与B酸酸量的实验结果符合。

Abstract: By applying EHMOmethod,a series of mimic calculations have been performed for the surface acid of Silica-Alumina catalyst,the basic states of Bronsted acid and the influence of Silica-Alumina ratio on Bronsted acidity have been studied.The calculations from different states of Bronsted acid show that the content of Aluminium in catalyst have a great influence upon the Dronsted acidity,and the forming of Al-O-Al structure is the essential reason for marked decrease of Bronsted acid strength.The results from theoretical calculations are in accordance with the experimental results of measurements of Bronsted acid.

TrendMD:

封继康, 李志儒, 李松, 张武阳. 模拟硅铝催化剂上表面酸的研究(Ⅱ)-B酸存在的基本形式及硅铝比对B酸酸性的影响. 高等学校化学学报, 1986, 7(11): 1016.

Feng Jikang, Li Zhiru, Li Song, Zhang Wuyang. A Study of Surface Acid on Mimic Silica-Alumina Catalyst (Ⅱ)-The Basic states of Bronsted Acid and the Influence of Silicon-Aluminium Ratio on Bronsted Acdity. Chem. J. Chinese Universities, 1986, 7(11): 1016.