| 由偏铝酸钠直接制取高纯γ-Al2O3 |
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| 引用本文： | 高建峰,徐春彦,王建中,王久芬,庄源益. 由偏铝酸钠直接制取高纯γ-Al2O3[J]. 化工学报, 2003, 54(12): 1783-1786 |
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| 作者姓名： | 高建峰 徐春彦 王建中 王久芬 庄源益 |
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| 作者单位： | 华北工学院化工系，山西 太原030051;南开大学环境科学与工程系，天津 300071 |
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| 基金项目： | 山西省青年基金 ( 2 0 0 3 10 12 )资助项目~~ |
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| 摘 要： | 引 言γ Al2 O3是一种多孔、高分散度的固体物料 ,比表面积大、吸附性能好 ,γ Al2 O3膜能有效地分离醇 水、酮 水混合蒸气 ,热稳定性良好 .其活性特征的主要指标为孔容、比表面积 ,这两个参数高时活性亦高 .γ Al2 O3中的钠、硅、铁、钙等杂质离子会使催化剂中毒 ,降低催化
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| 关 键 词： | 脱钠剂 超深度脱硅剂 拟薄水铝石 SB粉 比表面 |
| 文章编号： | 0438-1157(2003)12-1783-04 |
| 收稿时间： | 2002-08-20 |
| 修稿时间： | 2002-08-20 |
DIRECT PREPARATION OF HIGH PURE γ-ALUMINA FROM SODIUM ALUMINATE |
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| GAO Jianfeng,XU Chunyan,WANG Jianzhong,WANG Jiufen,ZHUANG Yuanyi. DIRECT PREPARATION OF HIGH PURE γ-ALUMINA FROM SODIUM ALUMINATE[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(12): 1783-1786 |
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| Authors: | GAO Jianfeng XU Chunyan WANG Jianzhong WANG Jiufen ZHUANG Yuanyi |
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| Abstract: | The purification of mother liquor containing sodium aluminate by using desilication agent and the preparation of high pure pseudo-boehmite and gamma alumina are reported. The sodium aluminate in the mother liquor coming from Shanxi Aluminium Plant is treated with home-made desilication agent, the ratios of SiO2/Al2O3 and Fe2O3/Al2O3 in treated-solution are below 0.01%. The pseudo-boehmite is obtained with buffer solution deposition in which ammonia gas acts as a circulating medium. The specific surface area of pseudo-boehime powder reaches up to 300m2•g-1 and pore volume reaches about 0.7ml•g-1.The content of sodium in pseudo-boehime is below 0.005% after treating the pseudo-boehime with a sodium removal agent.The quality of this product is comparable to the SB powder made in Germany.Gamma alumina with a larger specific surface area and pore volume is obtained by temperature programmed calcination of pseudo-boehmite. |
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| Keywords: | desodium agent desilication pseudo-boehmite SB powder specific surface area |
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