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地球深部金属碳化物的晶体化学 被引量:8
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作者 施倪承 白文吉 +5 位作者 李国武 方青松 马喆生 杨经绥 熊明 颜秉刚 《地学前缘》 EI CAS CSCD 北大核心 2005年第1期29-36,共8页
金属碳化物的矿物十分稀少,但人工合成物则在化学成分及晶体结构两方面分布均较为丰富,可分成两种结构类型,即填隙结构型及复杂化合物型,其形成机理与碳原子与金属原子的半径比(Rc/Rm)有关。金属碳化物是西藏罗布莎铬铁矿床地幔矿物群... 金属碳化物的矿物十分稀少,但人工合成物则在化学成分及晶体结构两方面分布均较为丰富,可分成两种结构类型,即填隙结构型及复杂化合物型,其形成机理与碳原子与金属原子的半径比(Rc/Rm)有关。金属碳化物是西藏罗布莎铬铁矿床地幔矿物群的重要组成部分。列举了在该地区已发现的若干金属碳化物种属。探讨了该类矿物的形成机理以及该类矿物中的某些种属表征其形成的温度、压力状态的可能性。 展开更多
关键词 晶体结构 晶体化学 金属碳化物矿物 复杂化合物型 西藏罗布莎铬铁矿床
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Simulation calculation of solubility of insoluble compound M_mA_a in complex system
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作者 杨天足 张杜超 吴江华 《Journal of Central South University》 SCIE EI CAS 2012年第4期892-896,共5页
A simulation calculation model for the solubility of insoluble compound MmAa in complex system was established.According to coordination equilibrium principle,relevant dissociation reaction,complexation reaction,self-... A simulation calculation model for the solubility of insoluble compound MmAa in complex system was established.According to coordination equilibrium principle,relevant dissociation reaction,complexation reaction,self-complexation reaction and protonation reaction during insoluble compound dissolving were considered and then the mass balance equations about solubility calculation were obtained.In the case analysis,the solubility of silver chloride in ammonia system was obtained by simulation calculation,and curved surface charts of thermodynamic equilibrium about the total concentration of silver ions,pH and concentration of ammonia ions were drawn correspondingly.The results show that under the conditions of room temperature and 6 mol/L ammonia concentration,the calculated solubility value of silver chloride(34 g/L) is close to the actual value(31 g/L),demonstrating that this model is suitable for solubility calculation of insoluble compound MmAa in the complex system. 展开更多
关键词 complex system insoluble compound SOLUBILITY calculation model
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