التفاصيل البيبلوغرافية
| العنوان: |
A-site defective La 2- x CuO 4 perovskite-type oxides for efficient oxidation of cyclohexylbenzene. |
| المؤلفون: |
Xiao Y; State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. lifeng@mail.buct.edu.cn., Zhong L; State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. lifeng@mail.buct.edu.cn., Fan G; State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. lifeng@mail.buct.edu.cn., Li F; State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. lifeng@mail.buct.edu.cn. |
| المصدر: |
Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2023 Oct 17; Vol. 52 (40), pp. 14443-14452. Date of Electronic Publication: 2023 Oct 17. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 101176026 Publication Model: Electronic Cited Medium: Internet ISSN: 1477-9234 (Electronic) Linking ISSN: 14779226 NLM ISO Abbreviation: Dalton Trans Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: Cambridge, UK : Royal Society of Chemistry, c2003- |
| مستخلص: |
Phenol production through the oxidation of cyclohexylbenzene (CHB) and the subsequent decomposition of tertiary hydroperoxide has attracted more and more attention. In this study, defective La 2- x CuO 4 perovskite-type oxide catalysts with tunable A-site deficient structures and abundant surface oxygen vacancies were developed for the liquid phase oxidation of CHB to produce cyclohexylbenzene-1-hydroperoxide (CHBHP). By tuning the amount of A-site La ions in the perovskite structure, more surface oxygen vacancies and Cu + species were formed in catalysts. The A-site-deficient La 1.9 CuO 4 catalyst achieved significant catalytic efficiency along with a high CHBHP yield of 27.6% at 48.6% CHB conversion under reaction conditions ( i.e. , 120 °C and 12 h), outperforming those of other transition metal-based catalysts previously reported in the literature. A series of structural characterization methods and catalytic reactions highlighted the crucial roles of surface oxygen vacancies and metal La and Cu ions in the oxidation process. It was revealed that metal ions favored CHB adsorption and activation, while surface oxygen vacancies facilitated the creation of active adsorbed oxygen species. The present study offers an opportunity for the future design of new high-efficiency heterogeneous catalyst systems for CHB oxidation to obtain phenol. |
| تواريخ الأحداث: |
Date Created: 20230929 Latest Revision: 20231020 |
| رمز التحديث: |
20231021 |
| DOI: |
10.1039/d3dt01772a |
| PMID: |
37772348 |
| قاعدة البيانات: |
MEDLINE |
