Adsorption micro calorimeter

被引：0

作者：

Garcia-Cuello, V. ^{[1
]}

Moreno-Pirajan, J. C. ^{[1
]}

Giraldo-Gutierrez, L. ^{[2
]}

Sapag, K. ^{[3
]}

Zgrablich, G. ^{[3
]}

机构：

[1] Univ Los Andes, Grp Invest Solidos Porosos & Calorimetria, Dept Quim, Fac Ciencias, Bogota, Colombia

[2] Univ Nacl Colombia, Dept Quim, Fac Ciencias, Bogota, Colombia

[3] Univ Nacl San Luis, CONICET, INFAP, San Luis, Argentina

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2009年 / 97卷 / 02期

关键词：

Adsorption calorimetry; Pressures transducers; Calorimeter constant; Time constant; DIFFERENTIAL HEATS; AQUEOUS-SOLUTIONS; MICROCALORIMETER; DESIGN; CALIBRATION;

D O I：

10.1007/s10973-009-0345-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work, it is described an innovative heat flux micro calorimeter Tian-Calvet type designed to measure adsorption heats and reactions as well as adsorption isotherms. It consists in an adsorption instrument for volumetric gases, which is coupled to the micro calorimeter. The changes in the pressure are monitored by means of high sensitivity and high precision pressure transducers. The micro calorimeter has thermo elements that work by a Seebeck effect, in a twin cells system. The cells are inside a box in which the temperature can be adjusted from 77 to 300 K. The sensitiveness of the calorimeter is established by applying a perfectly known electric work. The results corresponding to the electric calibration, the base line stability determination and the time constant in the equipment are shown.

引用

页码：711 / 715

页数：5

共 19 条

[1]

AEROUX A, 1980, P 5 INT C ZEOL LOND, P433

[2] Relation between immersion enthalpy and the acidity of clay pillared minerals [J].

Betancourt, Marylin ;

Giraldo, Liliana ;

Moreno, Sonia ;

Molina, R. ;

Moreno, J. C. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 92 (03) :899-904

[3]

CALVET E, 1963, RECENT PROGR MICROCA, P1

[4] APPLICATIONS OF ADSORPTION MICROCALORIMETRY TO THE STUDY OF HETEROGENEOUS CATALYSIS [J].

CARDONAMARTINEZ, N ;

DUMESIC, JA .

ADVANCES IN CATALYSIS, 1992, 38 :149-244

[5] Design, calibration, and testing of a new Tian-Calvet heat-flow microcalorimeter for measurement of differential heats of adsorption [J].

Garcia-Cuello, V. ;

Moreno-Pirajan, J. C. ;

Giraldo-Gutierrez, L. ;

Sapag, K. ;

Zgrablich, G. .

INSTRUMENTATION SCIENCE & TECHNOLOGY, 2008, 36 (05) :455-475

[6] Heat conduction micro-calorimeter with metallic reaction cell and improved heat flux sensing system [J].

Giraldo, L ;

Moreno, JC ;

Huertas, JI .

INSTRUMENTATION SCIENCE & TECHNOLOGY, 2002, 30 (02) :177-186

[7] Calorimetric determination of activated carbons in aqueous solutions [J].

Giraldo, Liliana ;

Moreno-Pirajan, J. C. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 89 (02) :589-594

[8] CALORIMETRY IN ADSORPTION AND HETEROGENEOUS CATALYSIS STUDIES [J].

GRAVELLE, PC .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1977, 16 (01) :37-110

[9] A TIAN-CALVET HEAT-FLUX MICROCALORIMETER FOR MEASUREMENT OF DIFFERENTIAL HEATS OF ADSORPTION [J].

HANDY, BE ;

SHARMA, SB ;

SPIEWAK, BE ;

DUMESIC, JA .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1993, 4 (12) :1350-1356

[10] Adsorption microcalorimeter and its software: Design for the establishment of parameters corresponding to different models of adsorption isotherms [J].

Huertemendia, M ;

Giraldo, L ;

Parra, D ;

Moreno, JC .

INSTRUMENTATION SCIENCE & TECHNOLOGY, 2005, 33 (06) :645-659

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