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Conversion of Synthesis Gas to Light Olefins: Impact of Hydrogenation Activity of Methanol Synthesis Catalyst on the Hybrid Process Selectivity over Cr–Zn and Cu–Zn with SAPO-34
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/acs.iecr.7b02401 Alexey V. Kirilin 1 , Joseph F. Dewilde 2 , Vera Santos 1 , Adam Chojecki 1 , Kinga Scieranka 1 , Andrzej Malek 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/acs.iecr.7b02401 Alexey V. Kirilin 1 , Joseph F. Dewilde 2 , Vera Santos 1 , Adam Chojecki 1 , Kinga Scieranka 1 , Andrzej Malek 2
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Direct conversion of syngas to hydrocarbons occurs over hybrid catalyst mixtures containing methanol synthesis and microporous acid components. In particular, both copper and zinc oxide-based as well as chromium- and zinc-based catalysts are active for methanol synthesis and can be used in the hybrid catalyst process. The choice of methanol synthesis catalyst alters product selectivity and distribution. In particular, reaction products of the Cu–Zn/SAPO-34 system include only saturated hydrocarbons, while the Cr–Zn/SAPO-34 catalyst enables light olefin production directly from syngas. Hydrogenation properties of the methanol synthesis catalyst influence the C3/C2 yield ratios in the hydrocarbon products. We analyze the observed differences of selectivity with respect to olefin hydrogenation activities of the methanol synthesis components and their interaction with SAPO-34 for methanol-to-olefins conversion. A simplified kinetic model for the hybrid system is proposed to describe the observed selectivity patterns.
中文翻译：
合成气向轻烯烃的转化：甲醇合成催化剂的加氢活性对SAPO-34在Cr-Zn和Cu-Zn杂化过程选择性的影响
在包含甲醇合成和微孔酸组分的杂化催化剂混合物上，合成气直接转化为烃。特别地，基于铜和锌的氧化物以及基于铬和锌的催化剂都对甲醇合成具有活性，并且可以用于混合催化剂工艺中。甲醇合成催化剂的选择会改变产物的选择性和分布。特别是，Cu-Zn / SAPO-34系统的反应产物仅包含饱和烃，而Cr-Zn / SAPO-34催化剂可直接从合成气中生产轻质烯烃。甲醇合成催化剂的加氢性能影响C 3 / C 2烃产物的收率。我们分析观察到的选择性差异相对于甲醇合成组分的烯烃氢化活性以及它们与SAPO-34相互作用进行甲醇到烯烃转化的选择性差异。提出了用于混合系统的简化动力学模型，以描述观察到的选择性模式。
更新日期：2017-09-21
中文翻译：
合成气向轻烯烃的转化：甲醇合成催化剂的加氢活性对SAPO-34在Cr-Zn和Cu-Zn杂化过程选择性的影响
在包含甲醇合成和微孔酸组分的杂化催化剂混合物上，合成气直接转化为烃。特别地，基于铜和锌的氧化物以及基于铬和锌的催化剂都对甲醇合成具有活性，并且可以用于混合催化剂工艺中。甲醇合成催化剂的选择会改变产物的选择性和分布。特别是，Cu-Zn / SAPO-34系统的反应产物仅包含饱和烃，而Cr-Zn / SAPO-34催化剂可直接从合成气中生产轻质烯烃。甲醇合成催化剂的加氢性能影响C 3 / C 2烃产物的收率。我们分析观察到的选择性差异相对于甲醇合成组分的烯烃氢化活性以及它们与SAPO-34相互作用进行甲醇到烯烃转化的选择性差异。提出了用于混合系统的简化动力学模型，以描述观察到的选择性模式。
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