Rice husk ash as an alternate source for active silica production

被引：528

作者：

Della, VP

Kühn, I

Hotza, D

机构：

[1] Univ Fed Santa Catarina, Grad Program Mat Sci & Engn PGMAT, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Fed Santa Catarina, Dept Mech Engn EMC, BR-88040900 Florianopolis, SC, Brazil

[3] Univ Fed Santa Catarina, Dept Chem Engn EQA, BR-88040900 Florianopolis, SC, Brazil

来源：

MATERIALS LETTERS | 2002年 / 57卷 / 04期

关键词：

rice husk; rice husk ash; active silica; specific surface area;

D O I：

10.1016/S0167-577X(02)00879-0

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The objective of the present work is to develop a procedure for obtaining and characterization active silica with a high specific surface area from rice husk ash. The relative amount of silica was increased after burning out the carbonaceous material at different times and temperatures. A 95% silica powder could be produced after heat-treating at 700 degreesC for 6 h. The specific surface area of particles was increased after wet milling from 54 to 81 m(2)/g. (C) 2002 Elsevier Science B.V All rights reserved.

引用

页码：818 / 821

页数：4

共 22 条

[1]

*AM SOC TEST MAT, 1997, 5373 ASTM

[2]

PURIFICATION OF RICE HULLS AS A SOURCE OF SOLAR GRADE SILICON FOR SOLAR-CELLS [J].