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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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电石渣负载氟化钾的催化酯交换特性研究
, PP. 690-696
Keywords: 酯交换,催化剂,电石渣,氟化钾,负载
Abstract:
？通过浸渍法制备以氟化钾为活性体、电石渣为载体的负载型钙基酯交换催化剂，并在借助x射线荧光光谱仪、热分析天平、x射线衍射仪、氮气吸附-脱附仪、扫描电子显微镜以及哈米特指示剂法等手段对催化剂表征，以及气相色谱仪对原料油成分分析的基础上，通过间歇式酯交换实验系统，从催化剂添加量、醇油物质的量比、酯交换温度与时间等影响因素出发，研究了电石渣负载氟化钾催化花生油与甲醇酯交换的特性。电石渣负载氟化钾后，产生kcaf3、caf2以及kf等新物相，并且在催化剂添加量为5%、反应温度为62℃、反应时间为2h以及醇油物质的量比为15的酯交换条件下，能够取得91.58%的甘油收率，相比较氢氧化钙和未有活性体负载的电石渣，其催化酯交换性能得到提高。
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