Atmospheric pressure synthesis of nanosized ZSM-5 with enhanced catalytic performance for methanol to aromatics reaction

Kui Shen; Ning Wang; Weizhong Qian

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Atmospheric pressure synthesis of nanosized ZSM-5 with enhanced catalytic performance for methanol to aromatics reaction

机译：纳米化ZSM-5的大气压合成，甲醇对芳香族反应的催化性能增强

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We report, for the first time, an atmospheric pressure synthetic route for nanosized ZSM-5 with 100% yield by decoupling its nucleation and growth process. Under unsealed conditions, abundant crystal nuclei are first formed in the liquid phase and then grow into nanosized ZSM-5 via an improved steam-assisted conversion method using superheated steam as the medium at atmospheric pressure. The obtained nanosized ZSM-5 possesses excellent texture properties, such as high crystallinity, large surface area, tunable Si/Al molar ratio, and uniform size, and exhibits far longer lifetime as well as higher selectivity of total aromatics in the catalytic conversion of methanol to aromatics compared with conventional ZSM-5. This facile route can offer a very promising future for the large-scale preparation of zeolites by a safe and continuous process under atmospheric pressure.

机译：我们首次报道了纳米化ZSM-5的大气压力合成途径，通过解耦其成核和生长过程，其产量为100％。在未密封的条件下，首先在液相中形成丰富的晶体核，然后通过改进的蒸汽辅助转换方法使用过热的蒸汽作为大气压下的介质生长成纳米化的ZSM-5。获得的纳米ZSM-5具有出色的纹理特性，例如高结晶度，较大的表面积，可调节的Si/Al摩尔比和均匀的大小，并且寿命更长，并且在甲醇催化转化中的总芳香剂的选择性更高与常规ZSM-5相比芳香剂。这条便利的路线可以为在大气压下通过安全且连续的过程进行大规模制备的大规模制备提供非常有希望的未来。

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来源
《Catalysis science & technology》 |2014年第11期|3840-3844|共5页
作者
Kui Shen; Ning Wang; Weizhong Qian;
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作者单位

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China.;

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正文语种英语
中图分类汉语教学;
关键词
Methanol; Superheated steam; Atmospheric PressureZeolitesliquid phaseCATALYTIC CONVERSIONenhancing performancearomaticsgranitic layerContinuous productionDECOUPLING;

机译：甲醇;过热蒸汽;大气氧化石液体的phasecatalytic cenversionEnhancing perfermanceramaticsgraniticsgranitic layercranitile layercranitiundules decoupling;

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Atmospheric pressure synthesis of nanosized ZSM-5 with enhanced catalytic performance for methanol to aromatics reaction

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