Porous Silicon Oxycarbonitride Ceramics with Palladium and Pd2Si Nanoparticles for Dry Reforming of Methane

被引：4

作者：

Wang, Jun ^{[1
]}

Gruenbacher, Matthias ^{[2
]}

Penner, Simon ^{[2
]}

Bekheet, Maged F. ^{[1
]}

Gurlo, Aleksander ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Mat Sci & Technol, Chair Adv Ceram Mat, Str 17 Juni 135, D-10623 Berlin, Germany

[2] Univ Innsbruck, Inst Phys Chem, Innrain 52c, A-6020 Innsbruck, Austria

来源：

POLYMERS | 2022年 / 14卷 / 17期

关键词：

polysilazane; metal-containing precursors; polymer-derived ceramics; palladium nanoparticles; catalyst support; dry reforming of methane; POLYMER-DERIVED CERAMICS; NICKEL NANOPARTICLES; TEMPERATURE; CO2; PYROLYSIS; CATALYSTS; NANOCOMPOSITES; CARBIDE; CARBON; SICN;

D O I：

10.3390/polym14173470

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pd-containing precursor has been synthesized from palladium acetate and poly(vinly)silazane (Durazane 1800) in an ice bath under an argon atmosphere. The results of ATR-FTIR and NMR characterizations reveal the chemical reaction between palladium acetate and vinyl groups in poly(vinyl)silazane and the hydrolyzation reaction between -Si-H and -Si-CH=CH2 groups in poly(vinyl)silazane. The palladium nanoparticles are in situ formed in the synthesized precursors as confirmed by XRD, XPS, and TEM. Pd- and Pd2Si-containing SiOCN ceramic nanocomposites are obtained by pyrolysis of the synthesized precursors at 700 degrees C, 900 degrees C-1100 degrees C in an argon atmosphere. The pyrolyzed nanocomposites display good catalytic activity towards the dry reforming of methane. The sample pyrolyzed at 700 degrees C possesses the best catalytic performance, which can be attributed to the in situ formed palladium nanoparticles and high BET surface area of about 233 m(2) g(-1).

引用

页数：15

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