Herein, a kind of three-dimensional hollow Mg-Ca-Al hydrotalcite-like compounds (HTLCs) microsphere was prepared by self-assembly of hydrotalcite-like nanosheets. Mg-Ca-Al HTLCs microsphere (MS) has large specific surface area and large pore size, and the modification of KF·2H₂O increases numerous alkaline active sites on the surface of the catalyst. The prepared catalyst has excellent catalytic effect for the production of biodiesel by transesterification. Under the optimal conditions of the catalyst addition amount which accounts for 2% of the weight of oil, the biodiesel yield of the best catalyst is as high as 92% within 30 minutes. This article also provides a paradigm of a rational structural design for regulating the morphology of HTLCs.

中文翻译：

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3D 空心 Mg-Ca-Al 类水滑石化合物掺杂 KF 用于催化酯交换

在此，通过类水滑石纳米片的自组装制备了一种三维空心 Mg-Ca-Al 类水滑石化合物 (HTLCs) 微球。Mg-Ca-Al HTLCs微球(MS)具有较大的比表面积和较大的孔径，KF·2H ₂ O的改性增加了催化剂表面大量的碱性活性位点。制备的催化剂对酯交换法生产生物柴油具有优异的催化效果。在催化剂添加量占油品重量2%的最佳条件下，最佳催化剂的生物柴油收率在30分钟内高达92%。本文还提供了用于调节 HTLC 形态的合理结构设计范例。