通过金属硝酸盐和草酸二酰肼氧化还原的混合物燃烧方法合成了钙钛矿型 L a Al O3粉末。混合物在 350℃着火燃烧后产物为非晶态 ,进一步在 50 0℃和60 0℃焙烧后得到单相结晶钙钛矿相。混合物的 DSC分析得知 ,混合物的着火起始温度为 34 ...通过金属硝酸盐和草酸二酰肼氧化还原的混合物燃烧方法合成了钙钛矿型 L a Al O3粉末。混合物在 350℃着火燃烧后产物为非晶态 ,进一步在 50 0℃和60 0℃焙烧后得到单相结晶钙钛矿相。混合物的 DSC分析得知 ,混合物的着火起始温度为 34 0℃。这种软化学方法的应用使钙钛矿型 La Al O3的合成温度达到了迄今为止的最低温度。展开更多
Notable features of EIMS cleavage for eight N,N diacyl adipyl dihydrazides are summarized. The sources and chemical structures of the main fragments are interpreted. All of the eight compounds give the base peak of...Notable features of EIMS cleavage for eight N,N diacyl adipyl dihydrazides are summarized. The sources and chemical structures of the main fragments are interpreted. All of the eight compounds give the base peak of m/z 143. The main fragments are from the α cleavage and its rearranging ones at the carbonyl gronp.展开更多
文摘通过金属硝酸盐和草酸二酰肼氧化还原的混合物燃烧方法合成了钙钛矿型 L a Al O3粉末。混合物在 350℃着火燃烧后产物为非晶态 ,进一步在 50 0℃和60 0℃焙烧后得到单相结晶钙钛矿相。混合物的 DSC分析得知 ,混合物的着火起始温度为 34 0℃。这种软化学方法的应用使钙钛矿型 La Al O3的合成温度达到了迄今为止的最低温度。
文摘Notable features of EIMS cleavage for eight N,N diacyl adipyl dihydrazides are summarized. The sources and chemical structures of the main fragments are interpreted. All of the eight compounds give the base peak of m/z 143. The main fragments are from the α cleavage and its rearranging ones at the carbonyl gronp.