文献类型：期刊文献

英文题名：Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports

作者：Yang, Xinwei[1,2];Li, Qing[1,2];Lu, Erjun[3];Wang, Zhiqiang[1,2];Gong, Xueqing[1,2];Yu, Zhiyang[3];Guo, Yun[1,2];Wang, Li[1,2];Guo, Yanglong[1,2];Zhan, Wangcheng[1,2];Zhang, Jinshui[3];Dai, Sheng[4,5]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China;[4]Univ Tennessee, Div Chem Sci, Oak Ridge Natl Lab, Knoxville, TN 37996 USA;[5]Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

年份：2019

卷号：10

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000463695400026)】；

基金：W. C. Z. and Y. L. G. appreciate the financial support from the National Key Research and Development Program of China (2016YFC0204300), the National Natural Science Foundation of China (21577034), the 111 project (B08021) and Shanghai Pujiang Program (17PJD012). Y. G. appreciates the National Natural Science Foundation of China (21577035). Z. Y. Y. appreciates the National Natural Science Foundation of China (51871058 and 51701170). S. D. were supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division.

语种：英文

摘要：The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled gamma-Al2O3 (NA-Al2O3) architectures. The NA-Al2O3 architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of gamma-Al2O3 nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al2O3-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions.