Active zeolite catalysts of improved stability for producing gasoline
from methanol
    1.
    发明授权
    Active zeolite catalysts of improved stability for producing gasoline from methanol 失效
    活性沸石催化剂具有改善从甲醇生产汽油的稳定性

    公开(公告)号:US4663492A

    公开(公告)日:1987-05-05

    申请号:US872359

    申请日:1986-06-09

    摘要: A feedstock of low molecular weight oxygenates such as methanol and/or dimethylether is contacted with a mildly presteamed or hydro-thermally treated zeolite catalyst in a reaction zone to produce liquid hydrocarbons in the gasoline boiling range. The pretreated zeolite catalyst has an .alpha.-value (acid cracking activity) substantially the same as the .alpha.-value of fresh unsteamed catalyst and shows increased stability and resistance to aging under oxygenate conversion conditions of elevated temperature and pressure.

    摘要翻译: 在反应区中将低分子量含氧化合物如甲醇和/或二甲醚的原料与轻度预蒸馏或热热处理的沸石催化剂接触以产生汽油沸程范围内的液体烃。 预处理的沸石催化剂具有基本上与新鲜未蒸汽催化剂的α值相同的α-值(酸裂解活性),并且在升高的温度和压力的含氧化合物转化条件下显示增加的稳定性和耐老化性。