Isolated boron in zeolite for oxidative dehydrogenation of propane

doi:10.1126/science.abe7935

GSTDTAP > 气候变化

DOI	10.1126/science.abe7935
	Isolated boron in zeolite for oxidative dehydrogenation of propane
	Hang Zhou; Xianfeng Yi; Yu Hui; Liang Wang; Wei Chen; Yucai Qin; Ming Wang; Jiabi Ma; Xuefeng Chu; Yeqing Wang; Xin Hong; Zifeng Chen; Xiangju Meng; Hai Wang; Qiuyan Zhu; Lijuan Song; Anmin Zheng; Feng-Shou Xiao
	2021-04-02
发表期刊	Science
出版年	2021
英文摘要	Oxidative dehydrogenation of propane can produce propene from shale gas and help to replace petroleum as a propene feedstock. Boron-based catalysts can have high selectivity to propene, but the water by-product can deactivate the catalyst by hydrolyzing boron. Zhou et al. synthesized boron-doped silicate zeolites containing isolated boron sites that were stable against hydrolysis. The catalyst could achieve one-pass propane conversions up to ∼44% with selectivities for propene and >80% for ethene. They observed no deactivation after a 210-hour continuous test. Science , this issue p. [76][1] Oxidative dehydrogenation of propane (ODHP) is a key technology for producing propene from shale gas, but conventional metal oxide catalysts are prone to overoxidation to form valueless CO x . Boron-based catalysts were recently found to be selective for this reaction, and B–O–B oligomers are generally regarded as active centers. We show here that the isolated boron in a zeolite framework without such oligomers exhibits high activity and selectivity for ODHP, which also hinders full hydrolysis for boron leaching in a humid atmosphere because of the B–O–SiO x linkage, achieving superior durability in a long-period test. Furthermore, we demonstrate an isolated boron with a –B[OH…O(H)–Si]2 structure in borosilicate zeolite as the active center, which enables the activation of oxygen and a carbon–hydrogen bond to catalyze the ODHP. [1]: /lookup/doi/10.1126/science.abe7935
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/321139
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Hang Zhou,Xianfeng Yi,Yu Hui,et al. Isolated boron in zeolite for oxidative dehydrogenation of propane[J]. Science,2021.
APA	Hang Zhou.,Xianfeng Yi.,Yu Hui.,Liang Wang.,Wei Chen.,...&Feng-Shou Xiao.(2021).Isolated boron in zeolite for oxidative dehydrogenation of propane.Science.
MLA	Hang Zhou,et al."Isolated boron in zeolite for oxidative dehydrogenation of propane".Science (2021).