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摘要
以UIO-66为前驱体,通过高温惰性气氛下焙烧得到ZrO2@C载体,采用吸附还原方法制备了1% Rh/ZrO2@C催化剂。通过X射线衍射、热重、高分辨透射电镜等对催化剂结构进行分析,结果表明,金属Rh在载体上高度分散。将所合成的催化剂用于1-十二烯的氢甲酰化反应,考察了反应温度和反应压力对催化剂性能的影响。结果表明,当反应温度为90℃、反应压力为4 MPa时,催化剂具有较好的催化性能,1-十二烯转化率为94.2%,十三醛选择性达到98.9%,且催化剂循环使用4次后,活性无明显下降。
Abstract
ZrO2@C carrier is obtained by calcining UIO-66 materials under inert atmosphere at high temperature.The 1% Rh/ZrO2@C catalyst is prepared through adsorption reduction method.XRD,TG and HRTEM measurements are used to characterize the obtained catalysts.The results indicate that metal Rh disperses highly on the carrier.Hydroformylation reaction of 1-dodecene is applied to evaluate the catalytic performance of 1% Rh/ZrO2@C catalyst.Influences of reaction temperature and pressure on the performance of catalyst are investigated.It is shown that the catalyst exhibits good catalytic performance at 90℃ and 4 MPa,the conversion of 1-dodecene can achieve about 94.2% and the selectivity of tridecylic aldehyde reaches 98.9%.Moreover,there is no obvious loss in catalytic activity after the catalyst has been reused 4 times.
关键词
UIO-66
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氢甲酰化
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高碳烯烃
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Rh
Key words
UIO-66
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hydroformylation
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high-carbon olefins
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Rh
Author summay
田敬浩(1994-),男,硕士研究生,研究方向为轻烃的综合利用,tjh221@126.com
MOF衍生Rh/ZrO2@C催化剂的制备及氢甲酰化性能研究[J].
现代化工, 2019, 39(5): 119-122 DOI:10.16606/j.cnki.issn0253-4320.2019.05.026