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A series of the MoO3/γ-Al2O3 samples is prepared by mechanically mixing MoO3 with γ-Al2O3 powder. The solid state dispersion of the MoO3 in to the porous γ-Al2O3 is studied by SEM, XRD, XPS, TG/DTA, and positron annihilation spectroscopy. The positron annihilation lifetime spectra of the MoO3/γ-Al2O3 are measured as a function of the mass ratio of MoO3, heating temperature, heating time and in a way that the MoO3 is loaded gradually, separately. The experimental results show the process of the thermal dispersion of the MoO3 into the γ-Al2O3 support. It is shown that the MoO3 disperses into the outer surface first, and then into the secondary pores and the micro pores. The gradual Loading can make MoO3 effectively dispersed into γ-Al2O3. Grinding can also affecte the thermal dispersion process.
[1] ACˇG apek P, Hejtmnek V, Brabec L, Ziknov A, Ko AcˇG i ArˇG ík M 2007 Chem. Eng. Sci. 62 5117
[2] Ko AcˇG í P, těpnek F, Kubí AcˇG ek M, Marek M 2007 Chem. Eng. Sci. 62 5380
[3] Dong L, Chen Y 2000 Chin. J. Inorg. Chem. 16 250 (in Chinese) [董 林、 陈 懿 2000 无机化学学报 16 250]
[4] Xu X P, Zhao B Y, Xie Y C, Tang Y Q, Yang X C 1992 Chin. J. Catal. 13 97 (in Chinese) [徐献平、 赵璧英、 谢有畅、 唐有祺、 杨先春 1992 催化学报 13 97]
[5] Liu Y J, Xie Y C, Ming J, Liu J, Tang Y Q 1982 Chin. J. Catal. 3 262 (in Chinese) [刘英骏、 谢有畅、 明 晶、 刘 军、 唐有祺 1982 催化学报 3 262]
[6] Xiao F S, Zheng S, Sun J M, Yu R B, Qiu S L, Xu R R 1998 J. Catal. 176 474
[7] Zhang Y H, Xu Y D, Shi Y Z 1987 Chin. J. Catal. 8 27 (in Chinese) [张谊华、 徐奕德、 石映祯 1987 催化学报 8 27]
[8] Liu Y J, Xie Y H, Li C 1984 Chin. J. Catal. 5 234 (in Chinese) [刘英骏、 谢有畅、 李 册 1984 催化学报 5 234]
[9] Zhang H J, Wang D, Chen Z Q, Wang S J, Xu Y M, Luo X H 2008 Acta Phys. Sin. 57 7333 (in Chinese) [张宏俊、 王 栋、 陈志权、 王少阶、 徐友明、 罗锡辉 2008 57 7333]
[10] Luo X H, He J H 2003 Acta Petrol. Sin. 19 1 (in Chinese) [罗锡辉、 何金海 2003 石油学报 19 1]
[11] Zhu J, Wang L L, Ma L, Wang S J 2003 Acta Phys. Sin. 52 2929 (in Chinese) [朱 俊、 王莉莉、 马 莉、 王少阶 2003 52 2929]
[12] Kobayashi Y, Ito K, Oka T, Hirata K 2007 Radiat. Phys. Chem. 76 224
[13] Dong X J, Hu Y F, Wu Y Y 2010 Chin. Phys. B 19 013601
[14] Chen X L, Xi C Y, Ye B J, Weng H M 2007 Acta Phys. Sin. 56 6695 (in Chinese) [陈祥磊、 郗传英、 叶邦角、 翁惠民 2007 56 6695]
[15] Lu T, Yu W Z, Zhou H Y, Zhu G H, Wang X F, Wang C 2001 Chin. Phys. 10 145
[16] Zhu J, Wang S J, Luo X H 2003 Radiat. Phys. Chem. 68 541
[17] Guo H Y, Wang Z X, Liu Y J, Gao L, Fang G, Tang Y Q 1990 J. Mol. Catal. 4 188 (in Chinese) [郭洪猷、 王作新、 刘英骏、 高 岚、 方 刚、 唐有祺 1990 分子催化 4 188]
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[1] ACˇG apek P, Hejtmnek V, Brabec L, Ziknov A, Ko AcˇG i ArˇG ík M 2007 Chem. Eng. Sci. 62 5117
[2] Ko AcˇG í P, těpnek F, Kubí AcˇG ek M, Marek M 2007 Chem. Eng. Sci. 62 5380
[3] Dong L, Chen Y 2000 Chin. J. Inorg. Chem. 16 250 (in Chinese) [董 林、 陈 懿 2000 无机化学学报 16 250]
[4] Xu X P, Zhao B Y, Xie Y C, Tang Y Q, Yang X C 1992 Chin. J. Catal. 13 97 (in Chinese) [徐献平、 赵璧英、 谢有畅、 唐有祺、 杨先春 1992 催化学报 13 97]
[5] Liu Y J, Xie Y C, Ming J, Liu J, Tang Y Q 1982 Chin. J. Catal. 3 262 (in Chinese) [刘英骏、 谢有畅、 明 晶、 刘 军、 唐有祺 1982 催化学报 3 262]
[6] Xiao F S, Zheng S, Sun J M, Yu R B, Qiu S L, Xu R R 1998 J. Catal. 176 474
[7] Zhang Y H, Xu Y D, Shi Y Z 1987 Chin. J. Catal. 8 27 (in Chinese) [张谊华、 徐奕德、 石映祯 1987 催化学报 8 27]
[8] Liu Y J, Xie Y H, Li C 1984 Chin. J. Catal. 5 234 (in Chinese) [刘英骏、 谢有畅、 李 册 1984 催化学报 5 234]
[9] Zhang H J, Wang D, Chen Z Q, Wang S J, Xu Y M, Luo X H 2008 Acta Phys. Sin. 57 7333 (in Chinese) [张宏俊、 王 栋、 陈志权、 王少阶、 徐友明、 罗锡辉 2008 57 7333]
[10] Luo X H, He J H 2003 Acta Petrol. Sin. 19 1 (in Chinese) [罗锡辉、 何金海 2003 石油学报 19 1]
[11] Zhu J, Wang L L, Ma L, Wang S J 2003 Acta Phys. Sin. 52 2929 (in Chinese) [朱 俊、 王莉莉、 马 莉、 王少阶 2003 52 2929]
[12] Kobayashi Y, Ito K, Oka T, Hirata K 2007 Radiat. Phys. Chem. 76 224
[13] Dong X J, Hu Y F, Wu Y Y 2010 Chin. Phys. B 19 013601
[14] Chen X L, Xi C Y, Ye B J, Weng H M 2007 Acta Phys. Sin. 56 6695 (in Chinese) [陈祥磊、 郗传英、 叶邦角、 翁惠民 2007 56 6695]
[15] Lu T, Yu W Z, Zhou H Y, Zhu G H, Wang X F, Wang C 2001 Chin. Phys. 10 145
[16] Zhu J, Wang S J, Luo X H 2003 Radiat. Phys. Chem. 68 541
[17] Guo H Y, Wang Z X, Liu Y J, Gao L, Fang G, Tang Y Q 1990 J. Mol. Catal. 4 188 (in Chinese) [郭洪猷、 王作新、 刘英骏、 高 岚、 方 刚、 唐有祺 1990 分子催化 4 188]
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