Document Detail


Mesoporous Siliconiobium Phosphate as a Pure Brønsted Acid Catalyst with Excellent Performance for the Dehydration of Glycerol to Acrolein.
MedLine Citation:
PMID:  23132784     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The development of solid acid catalysts that contain a high density of Brønsted acid sites with suitable acidity, as well as a long lifetime, is one of great challenges for the efficient dehydration of glycerol to acrolein. Herein, we report on a mesoporous siliconiobium phosphate (NbPSi-0.5) composite, which is a promising solid Brønsted acid that is a potential candidate for such a high-performance catalyst. A variety of characterization results confirm that NbPSi-0.5 contains nearly pure Brønsted acid sites and has well-defined large mesopores. In addition, NbPSi-0.5 contains a similar amount of acid sites and exhibits weaker acidity than that of the highly acidic niobium phosphate and HZSM-5 zeolite. NbPSi-0.5 is quite stable and has a high activity for the dehydration of glycerol. The stability of NbPSi-0.5 is about three times higher than that of the reported catalyst. The significantly enhanced catalytic performance of NbPSi-0.5 can be attributed to 1) nearly pure Brønsted acidity, which suppresses side reactions that lead to coke formation; 2) a significant reduction of pore blocking due to the mesopores; and 3) a decrease in the amount and oxidation temperature of coke.
Authors:
Youngbo Choi; Dae Sung Park; Hyeong Jin Yun; Jayeon Baek; Danim Yun; Jongheop Yi
Related Documents :
11696374 - A pathogen-inducible divinyl ether synthase (cyp74d) from elicitor-treated potato suspe...
9390454 - Characterization of leuconostoc mesenteroides nrrl b-512f dextransucrase (dsrs) and ide...
15629124 - Expression of manganese lipoxygenase in pichia pastoris and site-directed mutagenesis o...
21629834 - Widespread occurrence of secondary lipid biosynthesis potential in microbial lineages.
6176604 - Fate of digesta ribonucleic acid in small intestine of sheep.
22781994 - Use of folic acid supplements and risk of cleft lip and palate in infants: a population...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-6
Journal Detail:
Title:  ChemSusChem     Volume:  -     ISSN:  1864-564X     ISO Abbreviation:  ChemSusChem     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101319536     Medline TA:  ChemSusChem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
World Class University Program of Chemical Convergence for Energy & Environment, Institute of Chemical Processes, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742 (Republic of Korea), Fax: (+82) 2-885-6670.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Timing of stroke in patients undergoing total hip replacement and matched controls: a nationwide coh...
Next Document:  MRT Letter: Application of novel "in vivo cryotechnique" in living animal kidneys.