Conversion of cellulose to polyols over promoted nickel catalysts

Shrotri, Abhijit, Tanksale, Akshat, Beltramini, Jorge Norberto, Gurav, Hanmant and Chilukuri, Satyanarayana V. (2012) Conversion of cellulose to polyols over promoted nickel catalysts. Catalysis Science and Technology, 2 9: 1852-1858. doi:10.1039/c2cy20119d

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Author Shrotri, Abhijit
Tanksale, Akshat
Beltramini, Jorge Norberto
Gurav, Hanmant
Chilukuri, Satyanarayana V.
Title Conversion of cellulose to polyols over promoted nickel catalysts
Journal name Catalysis Science and Technology   Check publisher's open access policy
ISSN 2044-4753
2044-4761
Publication date 2012-01
Sub-type Article (original research)
DOI 10.1039/c2cy20119d
Volume 2
Issue 9
Start page 1852
End page 1858
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2013
Language eng
Formatted abstract
Sorbitol is one of the key platform chemicals that can be applied to several industrial applications, including bio-fuels and hydrogen production. Presently there is no commercial heterogeneous catalytic process to produce sorbitol from cellulose due to the low yield and high cost of noble metals required for the conversion. In this paper we describe an aqueous phase hydrolysis-hydrogenation process to convert cellulose to sorbitol using a cheap Ni based catalyst. Monometallic Ni catalysts showed little activity for the reaction, but with the addition of a small amount of Pt to the Ni catalyst (Ni:Pt = 22:1 atom ratio), the activity was greatly enhanced. Results showed that the bimetallic Ni-Pt catalysts supported on mesoporous alumina gave a hexitol (sorbitol + mannitol) yield of 32.4% compared to only 5% with a Ni catalyst. Moreover, Ni-Pt supported on a mesoporous beta zeolite support provided even higher yield of 36.6%. These results were obtained after only 6 hours of run at 200 °C and 50 bar H 2 pressure (at room temperature). The presence of a small amount of Pt promotes the protonation of water and hydrogen molecules, which spill over to Ni sites creating in situ acid sites to catalyse hydrolysis of cellulose.
Keyword Supported catalysts
Heterogeneous catalysis
Mesoporous silicas
Beta-zeolite
Hydrogenolysis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes First published on the web: 14 May 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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