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MsCl and pyridine to afford the dimesylate (XXVI). Reaction of compound (XXVI) with NaOH in methanol/water provides the unstable intermediate (XXVII) that rearranges to the cyclic ether (XXVIII). Treatment of (XXVIII) with 1,2,4-triazole (XXIX) and p-chlorophenyl dichlorophosphate in pyridine...
Preparation of SrNbO2N Sr2Nb2O7 was synthesized using a flux method10. SrCO3, Nb2O5, and RbCl (as a flux) were mixed in a molar ratio of Sr:Nb:Rb = 1:1:5 and then heated in an alumina crucible for 5 h at 1423 K in air. The mixture was subsequently cooled to 1073...
冷却至室温,加入5 mL预制的NaYF4:Tm,Yb环己烷溶液,放置30 min后,通过减压蒸馏除去环己烷。然后取8 mmol NH4F和5 mmol NaOH溶解在10 mL甲醇溶液加入上述反应瓶中,室温下搅拌1 h后,减压蒸馏除去甲醇,在氩气的保护下加热到270～280 ℃保...
Ni0.90Mn0.07Al0.03OH2前驱体合成工艺与Ni0.90Mn0.10OH2一致。采用共沉淀法,以NaAlO2作为Al源,配置0.5 mol/L的NaAlO2溶液,将其与金属混合盐溶液、0.8 mol/L的NH3·H2O、0.5 mol/L的NaOH溶液分流通入反应釜,反应结束后洗涤、过滤、干燥、过筛,得到Ni0.90Mn0.07Al0.03OH2前驱体,记为NM...
(सूत्र C_3H_6O ) देता है। यौगिक D के साथ ब्रोमीन और NaOH, सूत्र C_2H_4O_2 के अम्ल का सोडियम लवण देते हैं, त...
Doubtnut is the perfect NEET and IIT JEE preparation App. Get solutions for NEET and IIT JEE previous years papers, along with chapter wise NEET MCQ solutions. Get all the study material in Hindi medium and English medium for IIT JEE and NEET preparation ...
preparation process J.Li等[5]采用水热法制备了铁酸钴(cobalt ferrite,CoFe2O4)磁性纳米粒子(NPs)。刘馨琳等[6]将其用于活化PS并降解四环素(tetracycline,TC)的试验中,在最佳条件240 ℃下反应24 h,降解率仅为65.78%。刘佳露[7]对该尖晶石进行改...