摘要
分别在碱性和酸性溶液体系中对不同来源的碱式碳酸钴进行水溶解性能研究,采用N2吸附-脱附、XRD、TG等手段对不同碱式碳酸钴的孔结构、失重性质及晶相结构进行表征。结果表明,碱式碳酸钴在酸性溶液体系中的溶解性均好于在碱性溶液体系中的溶解性;不同来源碱式碳酸钴的比表面积及孔体积存在较大差异,比表面积和孔体积较大的碱式碳酸钴的水溶解性能较好,无定形碱式碳酸钴具有较好的水溶解性;碱式碳酸钴中存在的四氧化三钴结构影响其物化性质,导致其水溶解性能较差。
The solubility of basic cobalt carbonates from different sources in acid and basic water so- lution was studied. The crystal structure, thermal properties and pore structure were characterized by XRD, TG and BET, respectively. The results show that the water solubility of different basic cobalt carbonates is very different, the solubility of basic cobalt carbonate in acid solution is better than in bas- ic solution. The difference in physico-chemical property of different basic cobalt carbonates influences the water solubility obviously. It is concluded that the salts with high surface area, large pore volume and high purity will have better solubility and Co3O4 existing in the salt reduces the water solubility of basic cobalt carbonate significantly.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2013年第5期6-9,共4页
Petroleum Processing and Petrochemicals
