Synthesis of SAPO-34 on graphite foams for adsorber heat exchangers

被引：43

作者：

Bonaccorsi, Lucio ^{[1
]}

Bruzzaniti, Paolo ^{[1
]}

Calabrese, Luigi ^{[1
]}

Freni, Angelo ^{[2
]}

Proverbio, Edoardo ^{[1
]}

Restuccia, Giovanni ^{[2
]}

机构：

[1] Univ Messina, Dept Elect Engn Chem & Ind Engn, I-98166 Messina, Italy

[2] CNR, Ist Tecnol Avanzate Energia Nicola Giordano, I-98126 Messina, Italy

来源：

APPLIED THERMAL ENGINEERING | 2013年 / 61卷 / 02期

关键词：

Graphite foams; Adsorption heat pump; Coatings; Zeolites; ACTIVATED CARBON; ADSORPTION; COATINGS;

D O I：

10.1016/j.applthermaleng.2013.04.053

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Graphite cellular structures have been prepared and used as supports for direct synthesis of SAPO-34 zeolite. The zeolite deposition was obtained by hydrothermal synthesis after a preliminary oxidation of the graphite foams to increase their chemical affinity with the zeolite. The thermal conductivity of graphite foams was evaluated by a "guarded hot plate" method. A comparison with aluminum foams of equivalent porosity showed that graphite foams perform similar or even better. In particular, the thermal conductivity of a graphite foam of 85% porosity was 24 W/m K. After the zeolite deposition process the thermal conductivity of the graphite composites was unchanged. Water adsorption measurements conducted on the coated foams by a McBain test unit confirmed the behavior observed for the pure SAPO-34, showing that interphase interactions between zeolite and support surface had no negative influence on the crystal growth process. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：848 / 852

页数：5

共 22 条

[1]

ASHBY M. F., 2000, Metal Foams: A Design Guide

[2] Zeolite/aluminum composite adsorbents for application in adsorption refrigeration [J].