pH值对氢氧化铝晶型和形貌影响的研究  

Study on Effect of pH Value on Crystalline and Morphology of Aluminum Hydroxide

作　　者：杨振 杨妮 彭学斌 田林 林琳 崔爱莉[3] YANG Zhen;YANG Ni;PENG Xue-bin;TIAN Lin;LIN Lin;CUI Ai-li(Kunming Metallurgical Research Institute Company Limited,Kunming,Yunnan 650031,China;The State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources,Kunming,Yunnan 650503,China;Chemistry Department,Tsinghua University,Beijing 100084,China)

机构地区：[1]昆明冶金研究院有限公司,云南昆明650031 [2]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650503 [3]清华大学化学系,北京100084

出　　处：《云南冶金》2021年第2期42-46,共5页Yunnan Metallurgy

基　　金：云南省科研院所技术开发研究专项(2019DC002)。

摘　　要：采用XRD、TEM、BET等表征手段,系统研究了pH值对化学液相沉淀法制备氢氧化铝的晶型、形貌和比表面积的影响。结果表明,随着溶液pH值从3增加到11,所得氢氧化铝依次为多孔性无定型[Al(OH)_(3)·nH_(2)O]、片状勃姆石[γ'-AlOOH]、颗粒状拜耳石[β-Al(OH)_(3)],pH在8~9生成的勃姆石型氢氧化铝的比表面积最大。The aluminum hydroxide is prepared by chemical liquid precipitation,and the effect of pH value on crystalline,morphology and the specific surface area of aluminum hydroxide was studied by XRD,TEM,BET and the other characterization means systematically.The test results show,when the pH value of solution was increased from 3 to 11,the prepared aluminum hydroxide respectively is porous amorphous form[Al(OH)_(3)H_(2)O],flake boehmite[γ'-AlOOH]and granular bayerite[β-Al(OH)_(3)],when the pH value is 8~9,the boehmite type aluminum hydroxide has the biggest specific surface area.

关 键 词：氢氧化铝 PH值 晶型 TEM XRD BET 

分 类 号：TF815[冶金工程—有色金属冶金] TF841.2