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Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (1): 57-64. Previous Articles Next Articles
Original Articles
杨宇翔;陈荣三;戴安邦
发布日期:
YANG YUXIANG;CHEN RONGSAN;DAI ANBANG
Published:
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In this paper, the structure of diatomite was studied systematically, it was found that there was jointed hydroxyl groups in Zhejiang white soil, only isolated and adjacent hydroxyl groups were found in other diatomite. There were still Si-O and Al-O vibrations verified by IR in the diatomite. Acid washing and roast all could change pore size, pore size distribution and structure. Upon roasting, its structure varied, free water disappeared and bound water decreased. When roasted at 1150℃, the amorphous silica of which diatomite is composed crystallized into α-cristobalite. Except Jiling diatomite had primary pores, Yunnan diatomite had thirdary pores, and all the others had secondary pores.
Key words: DIATOMITE, PORE SIZE, SILICON DIOXIDE, PORE SIZE DISTRIBUTION
CLC Number:
O611.662
YANG YUXIANG;CHEN RONGSAN;DAI ANBANG. A study on structure of local diatomites[J]. Acta Chimica Sinica, 1996, 54(1): 57-64.
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