非金属矿
非金屬礦
비금속광
NON-METALLIC MINES
2014年
5期
28-30,56
,共4页
石墨%插层%膨化%双氧水%硫酸
石墨%插層%膨化%雙氧水%硫痠
석묵%삽층%팽화%쌍양수%류산
graphite%intercalation%exfoliation%H2O2%H2SO4
以双氧水为氧化剂，硫酸为插层剂，分别对35、50和80目3种粒度天然石墨进行插层、水洗、干燥和膨化处理。采用X射线衍射和扫描电子显微镜等研究了相应产物的结构特性。结果显示随着天然石墨粒度的降低，这些产物的结构特性呈现一些规律性变化：对于石墨插层反应后的产物-石墨层间化合物，石墨的插层反应程度提高；但对于石墨层间化合物水洗并干燥后的产物可膨胀石墨，残余插层物含量、石墨片膨化程度及膨化期间的失重率均降低；对于可膨胀石墨膨化后的产物膨胀石墨，膨胀容积显著降低。
以雙氧水為氧化劑，硫痠為插層劑，分彆對35、50和80目3種粒度天然石墨進行插層、水洗、榦燥和膨化處理。採用X射線衍射和掃描電子顯微鏡等研究瞭相應產物的結構特性。結果顯示隨著天然石墨粒度的降低，這些產物的結構特性呈現一些規律性變化：對于石墨插層反應後的產物-石墨層間化閤物，石墨的插層反應程度提高；但對于石墨層間化閤物水洗併榦燥後的產物可膨脹石墨，殘餘插層物含量、石墨片膨化程度及膨化期間的失重率均降低；對于可膨脹石墨膨化後的產物膨脹石墨，膨脹容積顯著降低。
이쌍양수위양화제，류산위삽층제，분별대35、50화80목3충립도천연석묵진행삽층、수세、간조화팽화처리。채용X사선연사화소묘전자현미경등연구료상응산물적결구특성。결과현시수착천연석묵립도적강저，저사산물적결구특성정현일사규률성변화：대우석묵삽층반응후적산물-석묵층간화합물，석묵적삽층반응정도제고；단대우석묵층간화합물수세병간조후적산물가팽창석묵，잔여삽층물함량、석묵편팽화정도급팽화기간적실중솔균강저；대우가팽창석묵팽화후적산물팽창석묵，팽창용적현저강저。
Using H2O2 as oxidizing agent and H2SO4 as intercalating agent, three natural graphites with different particle size, 35, 50 and 80 mesh, were treated by intercalating, water-washing, drying and expanding, respectively. The textural characteristics of the resulting products were investigated by X-ray diffraction and scanning electro microscope. The results show that, with decreasing the particle size of natural graphite, the textural characteristics of the products present some regular changes: for the product prepared by intercalating reaction of natural graphite-graphite intercalation compound, the intercalating reaction degree increases; but for the product obtained by water-washing and drying graphite intercalation compound-expandable graphite, the relative ratio of residual intercalating agents, expansion degree of graphite lfakes and weight loss ratio during expansion decrease; for the product gained by expanding expandable graphite-expanded graphite, the expansion volume degreases markedly.
