钠型斜发沸石对高钙苦卤中钾离子的吸附研究

Adsorption behaviors of Na-Y Clinoptilolite(Na-Y-C)to K+from the bittern containing high Ca2+were investigated.It was found that Na-Y-C also showed satisfactory adsorption selectivity to K+in the bittern containing high Ca2+.The influences of pH,temperature and initial concentration on the adsorption of K+were remarkable.At pH 6.0 and 20℃,adsorption rate of Na-Y-C to K+was 85.96%.The adsorption rate of K+was decreased with the increase of temperature.And the adsorption capacity of K+was increased with the increase of initial concentration of K+.Adsorption column could easily be regenerated by 0.1mol/L HCl and saturated sodium chloride solution after adsorption of K+.And that be reused in production process.Thus Na-Y-C can be used as a adsorbent for recovery K+from the bitter containing high Ca2+.

β-线型碳的合成及其向金刚石转化研究

首先研究了炔烃缩聚两步法合成β-线型碳。实验表明，酸性介质和pH对线型碳结构、产率及纯度有较大影响。通过FTIR和X衍射研究了β-线型碳向金刚石转化。结果表明，在400℃、0．45MPa和N2气保护条件下，β-线型碳实现了向金刚石转化，转化过程无需催化剂、金刚石晶种和氩气保护，其产率可达37．7％。