AlPW12O40@C蔗糖磷钨酸铝原位合成乙酸正丁酯以AlPW_(12)O_(40)及蔗糖为原料,原位合成了新型绿色AlPW_(12)O_(40)@C固体酸催化剂,并用FT-IR,XRD,EDS和SEM等方法对其结构进行了表征.以AlPW_(12)O_(40)@C为催化剂催化合成乙酸正丁酯,考察了磷钨酸铝包覆量,催化剂用量,醇酸摩尔比,反应时间,反应温度及催...
以AlPW_(12)O_(40)及蔗糖为原料,原位合成了新型绿色AlPW_(12)O_(40)@C固体酸催化剂,并用FT-IR,XRD,EDS和SEM等方法对其结构进行了表征.以AlPW_(12)O_(40)@C为催化剂催化合成乙酸正丁酯,考察了磷钨酸铝包覆量,催化剂用量,醇酸摩尔比,反应时间,反应温度及催化剂重复使用次数对酯化率的影响.结果表明:AlP...
cycles.%以AlPW12O40及蔗糖为原料,原位合成了新型绿色AlPW12O40@C固体酸催化剂,并用FT-IR,XRD,EDS和SEM等方法对其结构进行了表征.以AlPW12O40@C为催化剂催化合成乙酸正丁酯,考察了磷钨酸铝包覆量,催化剂用量,醇酸摩尔比,反应时间,反应温度及催化剂重复使用次数对酯化率的影响.结果表明:AlPW12O40@C可...
金属氧化物对H3PW12O40／γ—Al2O3在甘油制丙烯醛过程中性能的影响
性评价等表征手段,考察了不同金属氧化物对PW/γ-Al2O3催化剂催化甘油脱水制丙烯醛反应性能的影响。结果表明:氧化物的 引入,修饰了催化剂的表面性质,降低了催化剂的表面酸量。CeO2的添加,提高了催化剂的活性,尤其La2O3的添加,明显改善 了催化剂的反应稳定性。而不同氧化物抑制积炭能力的强弱为:MgO>ZnO>La2O...
Aluminum dodecatungstophosphate (AlPW12O40) as an efficient heterogeneous inorganic catalyst for the chemoselective synthesis of geminal diacetates (acylal... et al.Aluminum dodecatungstophosphate (AlPW12O40) as an efficient heterogeneous inorganic catalyst for the chemoselective synthesis of geminal ...
The impregnation of H 3 PW 12 O 40 (referred as HPW) heteropolyacid on the Al-MCM-41 solid noticeably enhances by 2–3 times the Brnsted acidity with respect to the bare host. Catalytic evaluation confirms that 1wt %Pt/25wt.%HPW/Al-MCM-41 catalyst is active for n-heptane isomerization...
AlPW12O40@C蔗糖磷钨酸铝原位合成乙酸正丁酯A new style green solide acid catalyst AlPW12O40@C was synthesized in-situ from aluminium phospho-tungstate(AlPW12O40)and sucrose and characterized by FT-IR,XRD,EDS and SEM.A method of synthesis of n-butyl acetate catalyzed by A...
Firouzabadi H,Iranpoor N,Nowrouzi F.Aluminum dodecatungstophosphate (AlPW12O40) as a non-hygroscopic Lewis acid catalyst for the efficient Friedel-Crafts acylation of aromatic compounds under solvent-less conditions. Tetrahedron . 2004Firouzabadi, H., Iranpoor, N., and Nowrouzi, F. 2004. ...
Firouzabadi H,Iranpoor N. et al.Aluminum dodecatungstophosphate (AlPW12O40) as an efficient heterogeneous inorganic catalyst for the chemoselective synthesis of geminal diacetates (acylals) under solvent-free conditions. Tetrahedron Letters . 2003...