主题：【求助】(ok)压汞试验测试孔隙度效果较好

请知道的前辈指教一下吧，我也需要，这里先谢谢了！

原文由 ycguo 发表:
压汞试验测试孔隙度效果较好，但相关资料较少，请专家介绍一下。

联系我吧？here625@sohu.com

压汞仪原理

压汞仪文献介绍


PoreMaster sales remain very strong, in large part on the basis of the technical features presented in the attached.  This information is intended to improve the available resources/information which can be used to "win" sales cases!  If there are any questions, feel free to contact me

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1.     Effect of support on reactivity and selectivity of Ni-based oxygen carriers for chemical-looping combustion
Gayan, P. / de Diego, L.F. / Garcia-Labiano, F. / Adanez, J. / Abad, A. / Dueso, C. , Fuel, 87 (12), p.2641-2650, Sep 2008
...was taken as the average value of at least 20 measurements. Support porosity was measured by Hg intrusion in a Quantachrome PoreMaster 33. The identification of crystalline chemical species was carried out by powder X-ray diffraction (XRD) patterns acquired...
    Published journal article available from     ScienceDirect
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2.     Microstructural development in porous ±b-Si3N4 ceramics prepared with low volume RE2O3-MgO-(CaO) additions (RE=La,...
Plucknett, K.P. / Quinlan, M. / Garrido, L. / Genova, L. , Materials Science & Engineering A, 489 (1), p.337-350, Aug 2008
...porosity content. The pore size distribution of selected samples was determined using mercury intrusion porosimetry (Model Poremaster PM33-7, Quantachrome Instruments, Boynton Beach, Florida, USA). Post-sinter microstructural characterization was conducted...
    Published journal article available from     ScienceDirect
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3.     Pressure infiltration of boron nitride preforms with molten aluminum
Sithebe, H.S.L. / McLachlan, D. / Sigalas, I. / Herrmann, M. , Ceramics International, 34 (6), p.1367-1371, Aug 2008
...identify free aluminum present and borides in the samples. The pore structures of the green samples were calculated using a PoreMaster-60 Quantachrome Instruments, Hg porosimeter (Fig. 2). The hardness was measured with a load of 10kg. 3 Results Infiltration...
    Published journal article available from     ScienceDirect
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4.     Preparation and characterization of carbon-enriched coal fly ash
Rubio, B. / Izquierdo, M.T. / Mayoral, M.C. / Bona, M.T. / Martinez-Tarazona, R.M. , Journal of Environmental Management, 88 (4), p.1562-1570, Sep 2008
...analysis, samples were outgassed at 250^oC under vacuum up to 10-5mmHg. Analyses of mercury porosimetry were carried out in a Poremaster from Quantachrome. Morphological examination of the samples (coated with a gold layer) was carried out by means of scanning...
    Published journal article available from     ScienceDirect
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5.     Porous bioceramic bead prepared by calcium phosphate with sodium alginate gel and PE powder
Fu, Y.C. / Ho, M.L. / Wu, S.C. / Hsieh, H.S. / Wang, C.K. , Materials Science & Engineering C, 28 (7), p.1149-1158, Aug 2008
...Msubmerged). In addition, the volume of the pore size lower than 10 mum was valuated by mercury porosimetry (Quantachrome PoreMaster 60, Germany). 3 Result and discussion 3.1 Characterization of as-synthesized powder 3.1.1 Powder morphology The view of as-lyophilized...
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6.     Carbon-enriched coal fly ash as a precursor of activated carbons for SO2 removal
Izquierdo, M.T. / Rubio, B. , Journal of Hazardous Materials, 155 (1), p.199-205, Jun 2008
...analysis, samples were outgassed at 250^oC under vacuum up to 10-5mmHg. Mercury porosimetry analyses were carried out in a Poremaster from Quantachrome. The morphological examination of the samples (coated with a gold layer) was done by means of SEM in a Hitachi...
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7.     Preparation of uniform porous hydroxyapatite biomaterials by a new method
Tang, Y. / Tang, Y. / Lv, C. / Zhou, Z. , Applied Surface Science, 254 (17), p.5359-5362, Jun 2008
...SEM observations. The pore size distribution of porous HAP materials was measured by mercury intrusion method (Quantachrome PoreMaster, USA). 3 Results and discussion HAP powders were prepared by hydrothermal technology using CaHPO4.2H2O and CaCO3as raw materials...
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8.     Paper-structured catalyst with porous fiber-network microstructure for autothermal hydrogen production
Koga, H. / Fukahori, S. / Kitaoka, T. / Nakamura, M. / Wariishi, H. , Chemical Engineering Journal, 139 (2), p.408-415, Jun 2008
...JSM-5600, JEOL, Ltd.). The electron accelerating voltage was set at 10kV. Mercury intrusion analysis was carried out using a Poremaster 33P (YUASA IONICS, Ltd.) to evaluate the pore diameter and porosity of the catalyst samples. The pore size distribution was...
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9.     Textural characterization of native and n-alky-bonded silica monoliths by mercury intrusion/extrusion, inverse size...
Thommes, M. / Skudas, R. / Unger, K.K. / Lubda, D. , Journal of Chromatography A, 1191 (1), p.57-66, May 2008
Native and n-alkyl-bonded (n-octadecyl) monolithic silica rods with mesopores in the range between 10 and 25nm and macropores in the range between 1.8 and 6.0@mm were examined by mercury intrusion/extrusion, inverse size exclusion...
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10.     Geometric control and tuneable pore size distribution of buckypaper and buckydiscs
Whitby, R.L.D. / Fukuda, T. / Maekawa, T. / James, S.L. / Mikhalovsky, S.V. , Carbon, 46 (6), p.949-956, May 2008
...fine structure and apparent pore sizes. All buckypaper samples and purified MWCNT powder were analysed using a Quantachrome Poremaster. As each buckypaper weighed 5-15mg, several sheets of buckypaper were used in order to conduct mercury porosimetry tests on...
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压汞仪的测试主要针对大孔,也就是比表面吸附仪没法测的大孔,仪器的压力越大,所测试的孔的下限越小,但也不是无限小,到3nm时已达到4000公斤的压力了.具我所知现在压汞仪的检测下限好象最低也就是3nm.

压汞仪最基本的原理就是washburn方程,根据不同压力下汞所能压入的不同孔径来算

压汞仪也是一款测量样品孔体积和孔隙度的仪器，可以和物理吸附仪形成互补关系。物理吸附法可测定孔径范围是0.35nm-300nm，压汞法可测的孔径范围是3nm-1000um，两种分析方法的理论基础不同，压汞法主要是依据Washburn方程。

压汞法的原理是washburn方程：Pr=0.736，也就是压力越高测试的孔的体积越小。现在市面上卖该类仪器的厂商不多，而且大同小异。相信麦克的和康塔的楼主都了解过了吧，我只讲讲我的心得。按照压力来分：压汞仪大体分成两大款，一款是30000psi的，检测极限是6.4nm，另一款是60000psi的，检测极限是3.6nm。从某中情况上来讲它和气体吸附是可以取长补短，但是压汞仪除了能够检测大孔的优点外还有就是速度比较快，但是最大的缺点是所用到的汞是剧毒的，而且仪器要靠机械传动达到比较高的压力，所以仪器故障率较高。