| 制备13X分子筛的优化实验研究 |
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| 引用本文： | 司玉成,吴涛.制备13X分子筛的优化实验研究[J].矿产综合利用,2022,43(4):157-161. |
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| 作者姓名： | 司玉成 吴涛 |
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| 作者单位： | 1.陕西国防工业职业技术学院 化学工程学院，陕西 西安 710300 |
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| 基金项目： | 陕西省教育厅一般专项科学研究计划项目（20JK0509）；;陕西国防工业职业技术学院科研项目（Gfy19-04）； |
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| 摘 要： | 煤泥是原煤洗选中产生的固体废弃物，产量大，危害严重。将黄陵煤泥通过碱熔-水热的方法制备出13X分子筛。通过正交实验研究发现，n(H2O/Na2O)是对13X分子筛静态水吸附量影响最大的因素，其次是老化时间、n(Na2O/SiO2)、晶化时间，最小为晶化温度。优化的工艺条件为:n(Na2O/SiO2)为2.9，n(H2O/Na2O)为45，老化时间14 h，晶化时间9 h，晶化温度100℃。测试表明，制备的13X分子筛结晶良好，晶体粒径2 μm左右，颗粒大小均匀，该分子筛以微孔为主。
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| 关 键 词： | 煤泥 13X分子筛 水热合成 静态水吸附量 |
| 收稿时间： | 2021-08-12 |
Research on Optimization Experiment of Preparing 13X Molecular Sieve |
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| Affiliation: | 1.College of Chemical Engineering, Shaanxi Institute of Technology, Xi’an, Shaanxi, China2.College of Chemistry and Engineering, Xi’an University of Science and Technology, Xi'an, Shaanxi, China |
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| Abstract: | Coal slime was a solid waste generated from raw coal washing, with large output and serious harm. The 13X molecular sieve was prepared from Huangling coal slime by alkali fusion-hydrothermal method. Through orthogonal experiments, it was found that n(H2O/Na2O) had the greatest influence on the static water adsorption capacity of 13X molecular sieve, followed by aging time, n(Na2O/SiO2), crystallization time, and crystallization temperature. The optimized process conditions were that: the n(Na2O/SiO2) was 2.9, the n(H2O/Na2O) was 45, the aging time was 14 h, the crystallization time was 9 h, and the crystallization temperature was 100℃. The tests showed that the 13X molecular sieve had good crystallization. The crystal particle size was 2 μm and uniform. The molecular sieve was mainly composed of micropores. |
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