Rational design of silica nanoreactor encapsulated Ni for reinforcing coke-resistance in dry reforming of methane
文献类型：期刊论文
| 作者 | Qiu, Songbai2,3,4; Lan, Ling4; Liang, Zheng1; Xu, Xian4; Tan, Linlu4; Yang, Haowen4; Zhang, Qian2,3,4; Wang, Tiejun2,3,4 |
| 刊名 | APPLIED CATALYSIS A-GENERAL
 |
| 出版日期 | 2024-06-25 |
| 卷号 | 680页码:9 |
| 关键词 | Nanoreactor Dendritic fibrousSiO2 nanospheres Metal nanoparticle encapsulation Dry reforming of methane Coke-resistance |
| ISSN号 | 0926-860X |
| DOI | 10.1016/j.apcata.2024.119759 |
| 通讯作者 | Zhang, Qian(zhangqian@gdut.edu.cn) ; Wang, Tiejun(tjwang@gdut.edu.cn) |
| 英文摘要 | Dry reforming of methane (DRM) provides a desired approach to produce valuable syngas in tackling greenhouse gases. Yet it faces a formidable challenge in the design and synthesis of high coke-resistant Ni-based catalysts. Herein, we report a nanoreactor strategy to construct a supported Ni catalyst (Ni@SiO 2 @SiO 2 ) for reinforcing coke-resistance during DRM, by effectively encapsulating small Ni nanoparticles into dendritic fibrous silica (SiO 2 ) nanospheres and coating SiO 2 shell layers. Taking advantage of chemical characteristics of citric acid (CA), CA-chelated Ni impregnation enables the uniform immobilization of Ni species into the radial SiO 2 framework, then following carbonization produces protective carbon layers on the Ni nanoparticle surface during SiO 2 coating, which can be removed via oxidizing calcination. The resultant pomegranate-like nanoreactor catalyst possesses outstanding coke-resistance, without any detectable coke deposition after 200 h of DRM reaction at 700 degrees C, benefiting from effectively restricting metal sintering and fully preventing formation of inert carbon species. |
| WOS关键词 | DENDRITIC FIBROUS NANOSILICA ; SHELL NANOCATALYSTS ; FORMATION MECHANISM ; CATALYSTS ; NANOPARTICLES ; CONFINEMENT ; STRATEGY |
| 资助项目 | Guangdong Basic and Applied Basic Research Foundation[2023A1515012249] ; National Nature Science Foundation of China[U21A20288] ; National Nature Science Foundation of China[22278088] |
| WOS研究方向 | Chemistry ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001236661400001 |
| 出版者 | ELSEVIER |
| 资助机构 | Guangdong Basic and Applied Basic Research Foundation ; National Nature Science Foundation of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/41882]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Zhang, Qian; Wang, Tiejun |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab Plant Resources Biorefinery, Guangzhou 510006, Peoples R China 3.Jieyang Ctr, Guangdong Prov Lab Chem & Fine Chem Engn, Jieyang 515200, Peoples R China 4.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Songbai,Lan, Ling,Liang, Zheng,et al. Rational design of silica nanoreactor encapsulated Ni for reinforcing coke-resistance in dry reforming of methane[J]. APPLIED CATALYSIS A-GENERAL,2024,680:9. |
| APA | Qiu, Songbai.,Lan, Ling.,Liang, Zheng.,Xu, Xian.,Tan, Linlu.,...&Wang, Tiejun.(2024).Rational design of silica nanoreactor encapsulated Ni for reinforcing coke-resistance in dry reforming of methane.APPLIED CATALYSIS A-GENERAL,680,9. |
| MLA | Qiu, Songbai,et al."Rational design of silica nanoreactor encapsulated Ni for reinforcing coke-resistance in dry reforming of methane".APPLIED CATALYSIS A-GENERAL 680(2024):9. |
入库方式： OAI收割
来源：广州能源研究所
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