Research & Development

Preparation of high purity pseudo-boehmite by hydrolysis of aluminium isopropanol

  • Peng TIAN ,
  • Wei LI ,
  • Yuzhe YANG ,
  • Kunji LIU ,
  • Qianjin XU ,
  • Guiling NING
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  • 1. Dalian University of Technology-Baohong Technology United Research Center for Advanced Lithium Battery Materials,Chemical Engineering Institute of Dalian University of Technology,Dalian 116023,China
    2. Jiangxi Baohong Nanotechnology Co.,Ltd.

Received date: 2021-04-09

  Online published: 2022-03-14

Abstract

Pseudo-boehmite was prepared by hydrolysis of aluminium isopropoxide.The effect of water dosages(the molar ratio of water to aluminum isopropanol was 2∶1~4.5∶1),hydrolysis time(0~3 h),drying temperature(75~120 ℃) and drying time(2~10 h) on the residual carbon content,crystal phase,dispersion index and hydration effect were investigated.The results showed that the changes of preparation conditions all affected the carbon content of the product,and the effect of water dosage was the most obvious.With the increase of water dosage,the crystal form of the product was continuously improved,and the dispersion index increased from 2.3% to more than 95%.Prolonging the hydrolysis time was beneficial to the grain growth of pseudo-boehmite and the increase of dispersion index(from 35.4% to more than 65%).Drying temperature and drying time had little effect on the crystal form and dispersion index of pseudo-boehmite.In addition,after the hydration of the obtained products,the dispersion index of the products had been greatly improved.When the ratio of water to aluminum isopropanol in the hydrolysis process was more than 3∶1,the dispersion index could reach more than 99% after hydration,which provided a research basis for the industrialization of the preparation of pseudo-boehmite by the hydrolysis of aluminium isopropoxide.

Cite this article

Peng TIAN , Wei LI , Yuzhe YANG , Kunji LIU , Qianjin XU , Guiling NING . Preparation of high purity pseudo-boehmite by hydrolysis of aluminium isopropanol[J]. Inorganic Chemicals Industry, 2022 , 54(2) : 54 -59 . DOI: 10.19964/j.issn.1006-4990.2021-0233

References

[1] ROUSSEAUX J M, WEISBECKER P, MUHR H, et al. Aging of pre-cipitated amorphous alumina gel[J]. Industrial & Engineering Che-mistry Research, 2002, 41(24):6059-6069.
[2] 张哲, 白立光, 沈冲, 等. 拟薄水铝石孔结构调控的研究进展[J]. 化学推进剂与高分子材料, 2020, 18(4):30-35.
[3] 佟佳, 吕振辉, 薛冬, 等. 异丙醇铝水解制备氧化铝研究[J]. 当代化工, 2017, 46(9):1803-1806,1810.
[4] SHENG X L, ZHOU Y M, KONG J, et al. Influence of pseudo-boeh-mite binder modified dealuminated mordenite on Friedel-Crafts alkylation[J]. Journal of Porous Materials, 2015, 22(1):179-185.
[5] 王程民. 醇铝法特种拟薄水铝石的开发与应用[J]. 石化技术, 2020, 27(11):189-190,33.
[6] 陈春波, 李平, 隋志军, 等. 大比表面积高牢固度堇青石蜂窝涂层的制备[J]. 工业催化, 2010, 18(3):40-45.
[7] 于严淏. 异丙醇铝水解制备高纯氧化铝及水合氧化铝[D]. 大连:大连理工大学, 2014.
[8] 南军, 于群, 于海斌, 等. 拟薄水铝石新工艺研发及其在加氢精制催化剂中的应用[J]. 无机盐工业. 2019, 51(6):80-82,87.
[9] 左少卿. 高比表面积大孔体积拟薄水铝石的制备及表征[D]. 兰州:兰州交通大学, 2018.
[10] YANG Y, XU Y Y, HAN B Z, et al. Effects of synthetic conditions on the textural structure of pseudo-boehmite[J]. Journal of Colloid and Interface Science, 2016, 469:1-7.
[11] 于海斌, 崔晓萌, 孙彦民, 等. 前驱体合成方法对γ-氧化铝性质的影响研究[J]. 无机盐工业. 2017, 49(1):52-55.
[12] 沈善文. 可控制备高纯介孔氧化铝及其甲烷化催化应用[D]. 大连:大连理工大学, 2017.
[13] 刘袁李. 异丙醇铝水解制备催化用拟薄水铝石和氧化铝[D]. 大连:大连理工大学, 2020.
[14] 段启伟, 戴隆秀, 江燮卿, 等. 由烷氧基铝制备催化剂载体氧化铝[J]. 石油炼制与化工, 1994(3):1-3.
[15] 朱强, 周峰. 醇铝水解法制备高纯拟薄水铝石工艺实践[J]. 山东冶金, 2019, 41(6):76-77.
[16] 刘袁李, 沈善文, 杨雨哲, 等. 异丙醇铝控制水解制备高纯拟薄水铝石和多孔氧化铝[J]. 工业催化, 2020, 28(1):24-31.
[17] 陈玉玲. 拟薄水铝石胶溶性能的研究[J]. 石油炼制与化工, 1983(12):28-34.
[18] 苗壮, 史建公, 郝建薇, 等. 拟薄水铝石的胶溶性与结构的关系[J]. 石油学报(石油加工), 2016, 32(3):493-500.
[19] 卢杨, 王晶, 史忠祥, 等. 异丙醇铝水解缩聚动力学[J]. 化学反应工程与工艺, 2019, 35(3):218-226,281.
[20] 俞芳, 张明海, 叶岗. 不同金属离子对氧化铝再水合性质的影响[J]. 石油学报 1999(5):25-27.
[21] 李晓云, 于海斌, 孙彦民, 等. 活性氧化铝再水合制备拟薄水铝石的形态研究[J]. 电子显微学报, 2011, 30(6):517-520.
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