Quasi-solid-phase synthesis of Fe-MFI zeolites by using Fe-containing zeolite seed sol for hydroxylation of benzene with H2O2

被引：10
|
作者：
Yue, Mingbo [1 ]
Jiang, Xusheng [1 ]
Zhang, Hao [1 ,2 ]
Zhang, Shijuan [1 ]
Xue, Teng [3 ]
Li, Yanxin [1 ]
机构：
[1] Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Shandong, Peoples R China
[2] Soochow Univ, Sch Radiol & Interdisciplinary Sci RAD X, Radiat Med & Protect, Suzhou 215123, Peoples R China
[3] East China Normal Univ, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2020年 / 294卷
关键词：
Zeolites; Solid-phase synthesis; Heterogeneous catalysis; Hydroxylation of benzene; Fe-containing seed sol; SELECTIVE CATALYTIC-REDUCTION; SOLVENT-FREE SYNTHESIS; DRY-GEL SYNTHESIS; NANOSIZED TS-1; NITROUS-OXIDE; BETA-ZEOLITE; MOR ZEOLITE; IRON SITES; PHENOL; CONVERSION;
D O I：
10.1016/j.micromeso.2019.109891
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Fe-MFI zeolites were fabricated by the direction of Fe-containing zeolite seed sol via a dry-gel conversion method. The textural properties and crystallinity of these zeolites were characterized by using N-2 adsorption-desorption isotherms, SEM (Scanning Electron Microscope) and XRD (X-ray diffraction), respectively. The iron coordination of these samples was characterized by UV-vis (ultraviolet-visible) and ESR (electron spin resonance) techniques. Fe-containing zeolite seed sol enhanced the distribution of the Fe species that exists mainly in the zeolites' framework and in a small amount in oligomeric FexOy clusters. Fe-MFI zeolite catalysts were applied in the direct hydroxylation of benzene to phenol with H2O2. Under optimized conditions, Fe-MFI zeolite synthesized from Fe-containing seed sol showed 12.1% conversion with 97% phenol selectivity, which was greater than the Fe-MFI zeolite from pure silica seed sol with 5.6% conversion with 95% phenol selectivity.
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页数：8
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