Zobrazeno 1 - 10
of 29 685
pro vyhledávání: '"Lewis acids and bases"'
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Junhua Li, John C. Crittenden, Chen Qiuzhun, Dong Wang, Chuan Gao, Yue Peng, Shengli Niu, Gaiju Zhao, Bin Wang, Chunmei Lu
Publikováno v:
Green Energy & Environment. 8:173-182
Activated red mud (RM) has been proved to be a promising base material for the selective catalysis reduction (SCR) of NOx. The inherent low reducibility and acidity limited its low–temperature activity. In this work, molybdenum oxide, tungsten oxid
Autor:
Yingying Xin, Zhaoxia Zheng, Zhihao Wang, Chen Zhao, Chengzhen Jiang, Zhicheng Luo, Shaofeng Gao
Publikováno v:
Green Energy & Environment. 7:1014-1023
Here, we report a Ru/TS-1 catalyst for selective hydrogenolysis of guaiacol to benzene in the aqueous phase at conditions of 240 °C and 2 bar H2, achieving a benzene yield of 86% with a hydrogenolysis rate of 103.1 mmol g−1 h−1. It was found tha
Autor:
Deng Lifeng, Ren Yingjie, Liu Bo, Roger Gläser, Bolin Zhang, Luo Chunyun, Shengen Zhang, Michael Liebau
Publikováno v:
Journal of Rare Earths. 40:1535-1545
The CeO2, Ce-Nb-Ox and Nb2O5 catalysts were synthesized by citric acid method to investigate the promotion effect of Nb on ceria for selective catalytic reduction (SCR) of NO with NH3. The catalytic activity measurements indicate that the mixed oxide
Publikováno v:
Chinese Journal of Chemical Engineering. 49:253-264
HZSM-5 zeolites with Si/Al ratios of 20, 35, 50 and 65 were prepared by the directing crystallization process of silicalite-1 seeds. The influence of Si/Al ratios on the production of benzene, toluene, xylene and naphthalene (BTXN) originated from as
Publikováno v:
Catalysis Today. :484-496
The classical Hantzsch reaction is a simple and utmost efficient protocol for the synthesis of biologically and pharmacologically important 1,4-dihydropyridine derivatives. The present study deals with the utilization of modified heteropoly acid (HPA
Autor:
Edgar Tututi-Ríos, Aída Gutiérrez-Alejandre, Horacio González, José L. Rico, Denis A. Cabrera-Munguía
Publikováno v:
Catalysis Today. :235-246
To modulate the acid properties of Sn-SBA-15-PrSO3H materials, the synthesis of heterogeneous Sn-SBA-15 catalysts modified with –PrSO3H groups was performed using the sol-gel method. This method enabled the integration of Sn in the structure of SBA
Publikováno v:
Catalysis Today. :403-413
The synthesis of homolimonenol by Prins condensation of limonene and paraformaldehyde over heterogeneous tin-based catalysts is reported for the first time. The tin supported MCM-41, SBA-15, and KIT-6 materials were prepared by incipient wetness impr
Atomically Dispersed Manganese Lewis Acid Sites Catalyze Electrohydrogenation of Nitrogen to Ammonia
Autor:
Bin Song, Yingwen Cheng, Jacob Kaelin, Hongbao Li, Ke Lu, Hong Zhang, Beibei Xie, Fan Feng, Qianwang Chen, Zhoutai Shang, Wenli Zhang
Publikováno v:
CCS Chemistry. 4:2115-2126
Ambient electrochemical nitrogen fixation is a promising and environmentally benign route for producing sustainable ammonia, but has been limited by the poor performance of existing catalysts that ...