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Selective carbonylation of dimethyl ether to methyl acetate on Ferrierite

机译:在镁碱沸石上二甲醚选择性羰基化为乙酸甲酯

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Synthesis of methyl acetate (MA) by carbonylation of dimethyl ether (DME) was investigated using laboratory made H-form Ferrierite (FER) zeolite with different Si/Al molar ratios. The synthesized H-FER with a Si/Al ratio of 12 (FER(12)) revealed a higher DME conversion as well as MA selectivity. The observed higher catalytic performance on the FER(12) was mainly attributed to a higher ratio of Bronsted to Lewis acid sites as well as the higher crystallinity with the less coke formation. The superior properties of the FER(12) having a higher ratio of Bronsted to Lewis acid sites and crystallinity efficiently suppressed the formation of inactive coke precursors. (C) 2015 Elsevier B.V. All rights reserved.
机译:使用实验室制得的具有不同Si / Al摩尔比的H型镁碱沸石(FER)沸石,研究了通过二甲醚(DME)的羰基化合成乙酸甲酯(MA)。 Si / Al比为12的合成H-FER(FER(12))显示出更高的DME转化率和MA选择性。在FER(12)上观察到的更高的催化性能主要归因于布朗斯台德酸与路易斯酸位点的比例更高,以及结晶度更高且焦炭形成较少。具有更高的布朗斯台德酸与路易斯酸位比和结晶度的FER(12)的优越性能有效地抑制了惰性焦炭前体的形成。 (C)2015 Elsevier B.V.保留所有权利。

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