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Upgrading catalytic activity of NiO/CaO/MgO from natural limestone as catalysts for transesterification of coconut oil to biodiesel
Biodiesel Limestone Methyl ester PEG Vegetable oil
2023/12/19
Limestone was converted to high surface area CaO/MgO catalysts via calcination-hydration-dehydration (CHD) method for transesterification of coconut oil to biodiesel. Thermal?decomposition?at 900 degr...
CaO/MgO复合固体碱催化剂催化降解木质素的研究
木质素 固体碱催化剂 醚键
2012/8/1
在氧化镁载体上浸渍醋酸钙后烧结制备了CaO/MgO复合固体碱催化剂,所制固体碱催化剂的表面碱度与催化剂制备条件有关:当CaO/MgO比值为0.08、在 700℃ 下煅烧时间 24 h 时制得的催化剂表面碱度可达到 30.2 mmol/g。以该固体碱催化剂催化木质素中醚键断裂反应,测试结果表明木质素降解产物重均相对分子质量(Mw)可从3 000降低至800以下,羟值由 200 mg/g 增加至 48...