| Cr-β沸石的合成与催化性能研究 |
| Studies on Synthesis and Catalytic Properties of Cr-β Zeolite |
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| 摘要: 在SiO2-Cr2O3-(TEA)2O-Na2O-H2O体系中，以四乙基氢氧化铵(TEAOH)为模板剂合成了Cr-β沸石，用XRD、IR、SEM及DTA-TGA等方法对样品进行了表征，探讨了反应混合物组成对Cr-β沸石晶化的影响，初步考查了Cr-β沸石催化苯酚与过氧化氢的羟基化反应活性。 |
| 关键词: Cr-β沸石 水热合成 分子筛 苯酚 羟基化 |
| 基金项目: |
| Abstract: Cr-β zeolite was synthesized in a SiO2-Cr2O3-(TEA)2O-Na2O-H2O system by using tetraethyl ammonium hydroxide (TEAOH) as an organic template, fumed silica and chromic chloride (CrCl3) as silica and chromium sources respectively. The chemical composition of the initial gel was 1.0SiO2∶xCr2O3∶y(TEA)2O∶zNa2O∶wH2O, where x=0.013～0.042, y=0.20～0.23, z=0.025～0.11, and w=13.3～18.3, respectively, and it was statically heated at 413 K for 8～11 days. Al-free Cr-β zeolite showed a higher activity and selectivity for hydroxylation of phenol with aqueous hydrogen peroxide as the oxidizing agent in water medium. |
| Keywords: Cr-β Zeolite hydrothermal synthesis molecular sieve phenol hydroxylation |
| 投稿时间：2004-08-10 修订日期：2004-12-08 |
| 摘要点击次数: 1167 |
| 全文下载次数: 1915 |
| 何红运,何驰剑,许青,文建军,朱华元,庞文琴.Cr-β沸石的合成与催化性能研究[J].无机化学学报,2005,21(3):320-324. |
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