期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
苯乙烯膦酸单酯的合成
1
《精细化工经济与技术信息》 1997年第2期10-10,共1页
关键词 苯乙烯膦酸酯 合成
下载PDF
Adsorption mechanism of styryl phosphonate ester as collector in ilmenite flotation 被引量:2
2
作者 Yan-ling XU Kai-hua HUANG +3 位作者 Hong-qiang LI Wei HUANG Cheng LIU Si-yuan YANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第12期4088-4098,共11页
A styryl phosphonate ester(SPE) collector was used to improve the flotation performance of ilmenite, and the adsorption mechanism and model were revealed and established, respectively. Microflotation tests showed that... A styryl phosphonate ester(SPE) collector was used to improve the flotation performance of ilmenite, and the adsorption mechanism and model were revealed and established, respectively. Microflotation tests showed that SPE exhibited a stronger collecting ability for ilmenite than the traditional collector styrene phosphonic acid(SPA). Zeta potential measurements revealed that both SPE and SPA could negatively shift the zeta potential of ilmenite, while SPE had more effects than SPA, suggesting the stronger adsorption of SPE. The analysis of X-ray photoelectron spectroscopy confirmed the chemisorption of SPA and SPE onto the Fe/Ti sites of ilmenite. According to frontier orbital theory, the chemical activities of SPE are greater than those of SPA. The partial densities of states analysis indicated that the PO—H groups of the collectors could interact with the Ti/Fe atoms of the ilmenite surface to generate a stable four-membered ring. The bonding model of the collector and(104) ilmenite surface showed that the adsorption energy of SPE was higher than that of SPA. Overall, SPE presented a better collecting ability and interaction effect for ilmenite flotation than SPA, and had the potential to replace SPA in the industry. 展开更多
关键词 styryl phosphonate ester ILMENITE FLOTATION COLLECTOR X-ray photoelectron spectroscopy density functional theory adsorption mechanism
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部