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Efficient Synthesis of Mordenite Zeolite for Dimethyl Ether Carbonylation
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-05-26 , DOI: 10.1021/acs.iecr.1c00845
Pei He 1 , Jianhao Wang 1 , Ying Li 1 , Shouying Huang 1 , Mei-Yan Wang 1 , Yue Wang 1 , Jing Lv 1 , Xinbin Ma 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-05-26 , DOI: 10.1021/acs.iecr.1c00845
Pei He 1 , Jianhao Wang 1 , Ying Li 1 , Shouying Huang 1 , Mei-Yan Wang 1 , Yue Wang 1 , Jing Lv 1 , Xinbin Ma 1
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Microporous zeolites are extensively used as industrial catalysts in which the Brønsted acidity usually governs performance and stability. However, conventional hydrothermal synthesis of zeolites is a time-consuming process. Shortening the synthesis period with maintained specific acidity is of significance for zeolite production. Here, we report an efficient synthesis of MOR zeolite with a large number of Brønsted acid sites, which is achieved by using a tubular reactor at high crystallization temperature. By combining SEM, Ar adsorption, and acidic site quantification, we confirm that the ultrafast synthesis method has no negative impact on the textural and acidic properties (e.g., strength, distribution, and concentration). Consequently, the obtained MOR exhibits great activity for dimethyl ether carbonylation, which is a typical Brønsted acid site catalyzed reaction. Hydrothermal treatment tests suggest that the MOR shows a better catalytic stability. Our finding proves the applicability of the ultrafast method on preparing zeolite for Brønsted acid site catalyzed reaction systems.
中文翻译:
用于二甲醚羰基化的丝光沸石的高效合成
微孔沸石广泛用作工业催化剂,其中布朗斯台德酸度通常控制性能和稳定性。然而,沸石的常规水热合成是一个耗时的过程。在保持特定酸度的情况下缩短合成周期对于沸石生产具有重要意义。在这里,我们报告了一种具有大量布朗斯台德酸位点的 MOR 沸石的有效合成,这是通过在高结晶温度下使用管式反应器实现的。通过结合 SEM、Ar 吸附和酸性位点量化,我们确认超快合成方法对结构和酸性特性(例如强度、分布和浓度)没有负面影响。因此,获得的 MOR 对二甲醚羰基化表现出很大的活性,这是典型的布朗斯台德酸位催化反应。水热处理试验表明,MOR 显示出更好的催化稳定性。我们的发现证明了超快方法在为布朗斯台德酸位点催化反应系统制备沸石方面的适用性。
更新日期:2021-06-09
中文翻译:

用于二甲醚羰基化的丝光沸石的高效合成
微孔沸石广泛用作工业催化剂,其中布朗斯台德酸度通常控制性能和稳定性。然而,沸石的常规水热合成是一个耗时的过程。在保持特定酸度的情况下缩短合成周期对于沸石生产具有重要意义。在这里,我们报告了一种具有大量布朗斯台德酸位点的 MOR 沸石的有效合成,这是通过在高结晶温度下使用管式反应器实现的。通过结合 SEM、Ar 吸附和酸性位点量化,我们确认超快合成方法对结构和酸性特性(例如强度、分布和浓度)没有负面影响。因此,获得的 MOR 对二甲醚羰基化表现出很大的活性,这是典型的布朗斯台德酸位催化反应。水热处理试验表明,MOR 显示出更好的催化稳定性。我们的发现证明了超快方法在为布朗斯台德酸位点催化反应系统制备沸石方面的适用性。