Linked Life Data

19833505

Source:http://linkedlifedata.com/resource/pubmed/id/19833505

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2009-11-6
pubmed:abstractText
Rice husk is an abundant agricultural byproduct. In the present paper, research on consecutive preparation of d-xylose and superfine silica from rice husk is carried out. The optimum hydrolysis conditions of xylan in rice husk to d-xylose are as follows: the concentration of H(2)SO(4) is 4% (wt.%), the temperature is 130 degrees C, the ratio of rice husk mass (g) to H(2)SO(4) solution volume (ml) is 1:4 and the time is 2 h. The hydrolysis degree of xylan reaches 96.22% (wt.%). High purity (98.5%, wt.%) d-xylose is obtained from acid hydrolysis solution with the purification yield of 71.63% (wt.%). At the same time, the metal oxides in rice husk are efficiently dissolved by H(2)SO(4). Residuals from H(2)SO(4) pre-treatment are incinerated under 750 degrees C in stationary air for 15 min. Silica is obtained with the purity of 99.87% (wt.%). The superfine silica powder is obtained after ground and ultrasonic dispersion, with the diameter of 30-200 nm and specific surface 287.86 m(2)/g.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1873-2976
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
101
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1263-7
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
A study on the consecutive preparation of d-xylose and pure superfine silica from rice husk.
pubmed:affiliation
College of Chemistry, Jilin University, No. 2699, Qianjin Street, Changchun 130012, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't