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lxa1102: ½ð±Ò+5, ·ÒëEPI+1, ¡ïÓаïÖú, лл²ÎÓ룬ϣÍûרҵÈËÊ¿°ï·ÒëÒ»ÏÂ... 2013-12-09 12:30:24
lxa1102: ½ð±Ò+5, ·ÒëEPI+1, ¡ïÓаïÖú, лл²ÎÓ룬ϣÍûרҵÈËÊ¿°ï·ÒëÒ»ÏÂ... 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 |
2Â¥2013-12-09 12:02:14
qfzcom
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3Â¥2013-12-10 22:03:58
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