PtSn-丝光沸石催化剂的制备及其肉桂醛加氢性能的研究

高爽, 张纭赫, 李振, 陈晓陆, 吴晓, 陈红

现代化工 ›› 2021, Vol. 41 ›› Issue (3) : 165 -169.

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现代化工 ›› 2021, Vol. 41 ›› Issue (3) : 165-169. DOI: 10.16606/j.cnki.issn0253-4320.2021.03.033
科研与开发

PtSn-丝光沸石催化剂的制备及其肉桂醛加氢性能的研究

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Synthesis of PtSn-mordenite catalyst and its performance in hydrogenation of cinnamaldehyde

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摘要

利用微乳液法制备了一系列Fe和Sn改性的Pt基催化剂,并将其应用于肉桂醛选择性加氢反应中。通过XRD、TEM、FT-IR、BET、XPS等对催化剂的结构和性质进行表征。结果表明,丝光沸石分子筛可以较好地分散活性组分,双组分负载的催化材料仍保持较好的介孔结构,适量Sn组分的加入提高了Pt物种的分散度,并使Pt物种处于富电子状态。在3.0 MPa、80℃条件下,Pt-1Sn-2/H-丝光沸石催化剂的最优催化性能为:肉桂醛转化率为74.0%,肉桂醇选择性为77.0%。催化剂的重复循环反应测试结果表明,催化剂活性组分基本没有流失,催化剂稳定性较好。

Abstract

A series of Fe and Sn modified Pt-based catalysts are prepared through a micro-emulsion method,and used for selective hydrogenation of cinnamaldehyde.The catalysts are characterized via XRD,TEM,FT-IR,BET and XPS.Results show that mordenite can better disperse active species.Double-component supported catalytic materials still maintain good mesoporous structure.The addition of Sn with an appropriate amount increases the dispersing degree of Pt species and makes Pt species stay in electron-enriched state.Under the optimized reaction conditions of 373 K and 3.0 MPa,Pt-1Sn-2/H-mordenite catalysts show the best catalytic properties,over which the conversion of cinnamaldehyde and the selectivity to cinnamyl alcohol are 74.0% and 77.0% respectively.The results from repeated cycle reaction indicate there is no loss of active components for the catalyst,showing a good stability.

关键词

肉桂醛 / 催化加氢 / 肉桂醇

Key words

cinnamaldehyde / catalytic hydrogenation / cinnamyl alcohol

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高爽, 张纭赫, 李振, 陈晓陆, 吴晓, 陈红. PtSn-丝光沸石催化剂的制备及其肉桂醛加氢性能的研究[J]. 现代化工, 2021, 41(3): 165-169 DOI:10.16606/j.cnki.issn0253-4320.2021.03.033

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