新型炭材料
新型炭材料
신형탄재료
New Carbon Materials
2015年
5期
438-444,382
,共8页
石墨层间化合物%化学氧化%膨胀石墨%膨胀容积
石墨層間化閤物%化學氧化%膨脹石墨%膨脹容積
석묵층간화합물%화학양화%팽창석묵%팽창용적
Graphite intercalation compounds%Chemical oxidation%Expanded graphite%Expansion volume
以天然鳞片石墨﹑HClO4﹑H3 PO4﹑CrO3 为原料,按质量比1:1:2:0. 3,利用化学氧化法制备出低温易膨胀﹑高膨胀容积的石墨层间化合物,300℃时膨胀容积为350 mL·g-1 ,800℃时达到最大膨胀容积610 mL·g-1 ,明显优于传统硫酸插层的石墨层间化合物. 采用SEM﹑EDS﹑XPS﹑FT-IR﹑XRD﹑TG等技术对石墨层间化合物的组成﹑结构﹑性能进行表征和分析,结果表明:石墨层间的插入物为PO3-4 ﹑ClO-4﹑Cr2 O2-7 ;并对化学氧化法插层机理进行了探讨.
以天然鱗片石墨﹑HClO4﹑H3 PO4﹑CrO3 為原料,按質量比1:1:2:0. 3,利用化學氧化法製備齣低溫易膨脹﹑高膨脹容積的石墨層間化閤物,300℃時膨脹容積為350 mL·g-1 ,800℃時達到最大膨脹容積610 mL·g-1 ,明顯優于傳統硫痠插層的石墨層間化閤物. 採用SEM﹑EDS﹑XPS﹑FT-IR﹑XRD﹑TG等技術對石墨層間化閤物的組成﹑結構﹑性能進行錶徵和分析,結果錶明:石墨層間的插入物為PO3-4 ﹑ClO-4﹑Cr2 O2-7 ;併對化學氧化法插層機理進行瞭探討.
이천연린편석묵﹑HClO4﹑H3 PO4﹑CrO3 위원료,안질량비1:1:2:0. 3,이용화학양화법제비출저온역팽창﹑고팽창용적적석묵층간화합물,300℃시팽창용적위350 mL·g-1 ,800℃시체도최대팽창용적610 mL·g-1 ,명현우우전통류산삽층적석묵층간화합물. 채용SEM﹑EDS﹑XPS﹑FT-IR﹑XRD﹑TG등기술대석묵층간화합물적조성﹑결구﹑성능진행표정화분석,결과표명:석묵층간적삽입물위PO3-4 ﹑ClO-4﹑Cr2 O2-7 ;병대화학양화법삽층궤리진행료탐토.
A graphite intercalation compound ( GIC ) was prepared by the chemical oxidation method using natural graphite flakes, HClO4 , H3 PO4 and CrO3 as raw materials with mass ratios of 1:1:2:0. 3. It was characterized by SEM, EDS, XPS, FT-IR, XRD and TGA. The expansion volume of the GIC was 350 mL·g-1 at 300 ℃ and reached the highest value of 610 mL·g-1 at 800 ℃. The expansion volume of this GIC was obviously higher than the GICs using H2 SO4 as an intercalating agent. The intercala-ting agents of the GIC were PO3-4 , ClO-4 and Cr2 O2-7 .
