The structural decoration of Ru catalysts by boron for enhanced propane dehydrogenation.

التفاصيل البيبلوغرافية
العنوان:	The structural decoration of Ru catalysts by boron for enhanced propane dehydrogenation.
المؤلفون:	Tianxing Yang, Rui Ma, Jiale Li, Yanan Liu, Junting Feng, Yufei He, Dianqing Li
المصدر:	Fundamental Research; Sep2024, Vol. 4 Issue 5, p1147-1156, 10p
مصطلحات موضوعية:	RUTHENIUM catalysts, SURFACE structure, DEHYDROGENATION, PROPANE, PROPENE
مستخلص:	Propane dehydrogenation (PDH) is an efficient technology for the direct production of propylene. Nevertheless, current PDH catalysts mainly rely on precious Pt or toxic Cr and especially undergo severe coke deposition. Herein, we report a Ru catalyst decorated by boron species (Ru-3B/Al2O3), which exhibits high catalytic performance for PDH. HAADF-STEM, EELS, and CO-FTIR characterization are used to identify the surface structure of the Ru active component, which shows that the high-energy unsaturated coordination sites, including corners, edges and step atoms for Ru-3B/Al2O3, are appropriately modified by BOx species. The encapsulation of high-energy active sites prone to C-C cracking and deep dehydrogenation leads to higher propylene selectivity (> 95%) and strong carbon resistance (kd 0.0007 min) over Ru-3B/Al2O3. The XPS and H2 -TPR results show that the migration of B species is driven by the reduction of B2 O3 to B2 O2 and that the coating degree of Ru particles is controlled by the chemical valance of Ru species. [ABSTRACT FROM AUTHOR]
	Copyright of Fundamental Research is the property of KeAi Communications Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
قاعدة البيانات:	Complementary Index

Full Text Finder

كن أول من يترك تعليقا!