英语语法分析

Latest researches in SAPO-18 molecular sieve were reviewed with respect to its synthesis, structure, acidity and application in methanol-to-olefins (MTO) process.

介绍了SAPO - 18分子筛的合成、结构组成、酸性表征及其在催化甲醇制烯烃(MTO)反应中应用的最新研究情况。

SAPO is a novel class of catalytic materials which exhibit excellent shape selectivity, thermal stability and hydrothermal stability, which can catalyze hydrocarbon reactions.

骨架呈负电性，具有可交换的阳离子，被广泛用作吸附剂、催化剂和催化剂载体，是一种具有优异择形选择性、热稳定性和湿热稳定性的新型催化材料。

The invention relates to a modification method of a SAPO molecular sieve, mainly aiming at solving the problem of poor performance of the SAPO molecular sieve in the prior art.

本发明涉及一种SAPO分子筛的改性方法，主要解决现有技术中SAPO分子筛性能差的问题。