本文提出了烷烃在标准状态下蒸发热的简易计算式△H_(v,298)~0=0.43438M+sum from i to n(C_(lj)^-+mδ式中M为分子量,C_(lj)和δ为结构常数,n和m分别为分子中碳数和季碳、叔碳相邻接的个数。按此式计算了150多个烷烃在标准状态下的蒸...本文提出了烷烃在标准状态下蒸发热的简易计算式△H_(v,298)~0=0.43438M+sum from i to n(C_(lj)^-+mδ式中M为分子量,C_(lj)和δ为结构常数,n和m分别为分子中碳数和季碳、叔碳相邻接的个数。按此式计算了150多个烷烃在标准状态下的蒸发热。计算值与实验值的平均误差小于1％。展开更多
Anhydrous trivalent or bivalent metal trichloroacetates were reported to have been decomposed by heating in vacuum and trichloroacetyl chloride was found; and catalyst decomposition of trichloroacetic acid by manganou...Anhydrous trivalent or bivalent metal trichloroacetates were reported to have been decomposed by heating in vacuum and trichloroacetyl chloride was found; and catalyst decomposition of trichloroacetic acid by manganous ion was reported by展开更多
It was pointed out in a previous article that alkalimetallic cations and NH4 have the same property, so both of them are thought to be catalysts that decompose trichloroacetic acid to produce trichloroacetyl chloride....It was pointed out in a previous article that alkalimetallic cations and NH4 have the same property, so both of them are thought to be catalysts that decompose trichloroacetic acid to produce trichloroacetyl chloride. But NH4 can not be used as a catalyst because it is easily decomposed. We have found that quaternary ammonium salt （NR4） has the property of a catalyst.展开更多
文摘本文提出了烷烃在标准状态下蒸发热的简易计算式△H_(v,298)~0=0.43438M+sum from i to n(C_(lj)^-+mδ式中M为分子量,C_(lj)和δ为结构常数,n和m分别为分子中碳数和季碳、叔碳相邻接的个数。按此式计算了150多个烷烃在标准状态下的蒸发热。计算值与实验值的平均误差小于1％。
文摘Anhydrous trivalent or bivalent metal trichloroacetates were reported to have been decomposed by heating in vacuum and trichloroacetyl chloride was found; and catalyst decomposition of trichloroacetic acid by manganous ion was reported by
文摘It was pointed out in a previous article that alkalimetallic cations and NH4 have the same property, so both of them are thought to be catalysts that decompose trichloroacetic acid to produce trichloroacetyl chloride. But NH4 can not be used as a catalyst because it is easily decomposed. We have found that quaternary ammonium salt （NR4） has the property of a catalyst.
