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lxa1102

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甲苯甲醇烷基化是一类新型的高选择性合成对二甲苯的方法,可以解决甲苯甲醇的过剩问题,具有很高的工业开发价值。在具有B酸中心及特殊孔结构的分子筛催化下,甲苯甲醇发生苯环上的亲电取代反应得到对二甲苯。甲苯甲醇烷基化的催化剂种类主要有Y沸石催化剂、SAPO及MCM-22催化剂、ZSN-5催化剂等,研究的比较多的是ZSM-5分子筛催化剂。通过对ZSM-5分子筛进行金属、非金属或复合改性后,可以显著提高反应的转化率和选择性。如何获得选择性高且稳定性好的催化剂,是人们未来研究的主要目标。
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奈奈生与戈薇

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lxa1102: 金币+5, 翻译EPI+1, 有帮助, 谢谢参与,希望专业人士帮翻译一下... 2013-12-09 12:30:24
Toluene alkylation of methanol is a kind of new method of selective synthesis of xylene, toluene can be solved the problem of excess of methanol, has the very high value of industrial development. In the center of the B acid and pore structure of special molecular sieve catalytic, toluene benzene methanol happen on para-xylene electrophilic substitution reaction. Toluene alkylation of methanol catalyst types mainly include Y zeolite catalyst, SAPO and MCM - 22, ZSN - 5 catalyst, catalyst research was more ZSM - 5 zeolite catalyst. Through the molecular sieve ZSM - 5 for metal, nonmetal or compound modification, can significantly improve the reaction conversion and selectivity. How to get high selectivity and stability good catalyst, is the main goal of the people in the future research. Please enter the text to be translated
2楼2013-12-09 12:02:14
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qfzcom

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2楼: Originally posted by 奈奈生与戈薇 at 2013-12-09 12:02:14
Toluene alkylation of methanol is a kind of new method of selective synthesis of xylene, toluene can be solved the problem of excess of methanol, has the very high value of industrial development. In ...

the sentences you translated are not always right, but good to volunteer to help others.
3楼2013-12-10 22:03:58
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奈奈生与戈薇

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4楼2013-12-11 14:10:25
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