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首页> 外文期刊>Catalysis science & technology >A highly efficient sulfonic acid resin for liquid-phase carbonylation of dimethoxymethane
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A highly efficient sulfonic acid resin for liquid-phase carbonylation of dimethoxymethane

机译：一种高效磺酸树脂的二甲氧甲烷液相羰基化

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摘要

Methyl methoxyacetate (MMAc), which is an important fine chemical, can be used as an intermediate to produce ethylene glycol from syngas. For the reported vapor-phase carbonylation of dimethoxymethane (DMM), the reaction was conducted under a higher (100) CO/DMM molar ratio with a lower CO conversion (0.5%). This paper systematically studied the effects of different zeolites and sulfonic acid resin catalysts, reaction temperature, CO pressure, CO/DMM ratio, reaction time, drying temperature, as well as H2O and methanol contents on DMM conversion and products selectivities, using a slurry phase reactor. A highly efficient sulfonic acid resin was selected without the assistance of a solvent and the DMM conversion reached nearly 100%, with 64.39% MMAc selectivity at 110 degrees C and 5.0 MPa for 6 h, with a CO/DMM ratio of only 1.67/1. The effects of H2O (32 ppm-10 wt%) and methanol (0.5-10 wt%) content on the carbonylation efficiency were also systematically studied. After removing H2O from the DMM and resin catalyst, the MMAc selectivity got as high as 74.14% under the same reaction conditions. According to these reaction results and a precise GC-MS analysis, DMM2, MG, DMG, MA, and MMAc2 were evidently produced, along with MMAc, DME, MF, and methanol. We propose reaction routes from these results, and anticipate that this direct carbonylation of DMM to produce an MMAc process is promising for industrial manufacturing.
机译：甲基methoxyacetate (MMAc),这是一个重要的精细化工,可以作为中间生产乙二醇合成气。羰基化二甲氧甲烷(DMM)反应进行了下一个更高的(在100年)有限公司/ DMM摩尔比率较低公司转换(& 0.5%)。不同的沸石和磺酸的影响树脂催化剂、反应温度、有限公司压力,CO /数字比、反应时间、干燥温度、水和甲醇的内容数字转换和产品选择性,使用一个反应堆浆阶段。磺酸树脂选择没有援助的溶剂和数字转换达到近100%,MMAc选择性为64.39%在110摄氏度和5.0 MPa 6 h,用有限公司/ DMM只有1.67/1的比例。(32 ppm-10 wt %)和甲醇(-10 - 0.5 wt %)的内容羰基化反应效率也系统地研究。DMM和树脂催化剂,MMAc选择性高达74.14%的也有同样的反应条件。和一个精确的gc - ms分析,DMM2, MG, DMG,妈,和MMAc2显然是生产,以及MMAc,测距装置、MF和甲醇。路线从这些结果,预测这个数字产生的直接羰基化MMAc过程是有前途的工业制造业。

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