KI-impregnated oyster shell as a solid catalyst for soybean oil transesterification.
KI-impregnated oyster shell as a solid catalyst for soybean oil transesterification.
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DOI：
10.1016/j.biortech.2011.10.039
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发表时间：
2012
影响因子：
11.4
通讯作者：
Suguna Jairam;P. Kolar;Ratna R. Sharma-Shivappa;J. Osborne;Jack Parker Davis
中科院分区：
文献类型：
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作者：
Suguna Jairam;P. Kolar;Ratna R. Sharma-Shivappa;J. Osborne;Jack Parker Davis
为了经济地生产生物柴油，需要研究廉价和绿色的催化剂。该研究的目的是测试 KI 浸渍的煅烧牡蛎壳作为大豆油酯交换反应的固体催化剂。具体目标是表征 KI 浸渍的牡蛎壳，确定反应变量和反应动力学的影响。该催化剂是通过将KI浸渍在煅烧的牡蛎壳上合成的。 X 射线衍射分析表明，表面存在硅酸钙石和碘化钾，并且由于煅烧和 KI 浸渍，表面增加了 31 倍。在测试条件下，理想的反应变量为催化剂负载量为1mmolg−1，温度为50°C，甲醇/油为10:1，反应时间为4小时。酯交换反应遵循一级反应（k=0.4385h−1）。使用牡蛎壳生产酯交换催化剂的选择可能会给美国的水产养殖业带来经济效益。
Research on inexpensive and green catalysts is needed for economical production of biodiesel. The goal of the research was to test KI-impregnated calcined oyster shell as a solid catalyst for transesterification of soybean oil. Specific objectives were to characterize KI-impregnated oyster shell, determine the effect of reaction variables and reaction kinetics. The catalyst was synthesized by impregnating KI on calcined oyster shells. X-ray diffraction analysis indicated the presence of portlandite and potassium iodide on the surface and a 31-fold increase in surface as a result of calcination and KI impregnation. Under the conditions tested, ideal reaction variables were 1mmolg−1for catalyst loading, 50°C for temperature, 10:1 for methanol/oil, and 4h for reaction time. The transesterification followed a first-order reaction (k=0.4385h−1). The option of using oyster shell for the production of transesterification catalysts could have economic benefits to the aquaculture industry in the US.