A型分子筛单胞内Ca<sup>2+</sup>对吸附热力学的影响

董光华; 贾兆昌; 黄伟; 庞先勇

您当前的位置：

首页 >

文章列表页 >

A型分子筛单胞内Ca²⁺对吸附热力学的影响

化工与环境工程 | 更新时间：2026-09-14

- A型分子筛单胞内Ca²⁺对吸附热力学的影响
- Effect of Ca²⁺ in the Unit Cell of A Zeolites on Adsorption Thermodynamics
- 中北大学学报（自然科学版） 2012年33卷第4期页码：448-452
- 作者机构：
  
  1. 晋中职业技术学院煤炭化工系
  2. 太原理工大学化学化工学院
  3. 太原理工大学煤科学与技术山西省和教育部重点实验室
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(21176167)
- DOI：
  中图分类号：
- 纸质出版：2012
- 稿件说明：
移动端阅览
董光华, 贾兆昌, 黄伟, 等. A型分子筛单胞内Ca²⁺对吸附热力学的影响[J]. 中北大学学报（自然科学版）, 2012,33(4):448-452.

董光华, 贾兆昌, 黄伟, et al. Effect of Ca²⁺ in the Unit Cell of A Zeolites on Adsorption Thermodynamics[J]. 2012, 33(4): 448-452.
董光华, 贾兆昌, 黄伟, 等. A型分子筛单胞内Ca²⁺对吸附热力学的影响[J]. 中北大学学报（自然科学版）, 2012,33(4):448-452. DOI：

董光华, 贾兆昌, 黄伟, et al. Effect of Ca²⁺ in the Unit Cell of A Zeolites on Adsorption Thermodynamics[J]. 2012, 33(4): 448-452. DOI：

摘要

采用反相气相色谱法测定了N2和CO在6种单胞内Ca2+数量不同的A型分子筛的吸附热力学参数(ΔadH

ΔadS和ΔadG)

其中N2和CO的吸附热分别在-12.08～-17.25 kJ·mol-1和-18.20～-25.95 kJ·mol-1范围内

吸附熵分别在-31.96～-42.68 J·mol-1K-1和-40.23～-56.45 J·mol-1K-1范围内

吉布斯自由能变在-3.35～-5.59 kJ·mol-1和-7.21～-10.53 kJ·mol-1范围内

吸附热、熵和自由能变在数值上都随着分子筛单胞内钙数量的增加而增加.结合钙交换后分子筛内电荷分布及孔道变化阐明了这些数据变化的原因

Abstract

The adsorption thermodynamic parameters(ΔadH

ΔadS and ΔadG) of N2 and CO on A zeolites of different the number of Ca2+ in unit cell have been evaluated by inverse gas chromatography.The adsorption heat of N2 and CO ranged from-12.08 kJ·mol-1 to-17.25 kJ·mol-1 and from-18.20 to-25.95 kJ·mol-1

the adsorption entropy of N2 and CO ranged from-31.96 J·mol-1·K-1 to-42.68 J·mol-1·K-1 and from-40.23 J·mol-1·K-1 to-56.45 J·mol-1·K-1

the Gibbs free energy of N2 and CO ranged from-3.35 kJ·mol-1 to-5.59 kJ·mol-1 and from-7.21 kJ·mol-1 to-10.53 kJ·mol-1

respectively.The results show that the values of the adsorption heat

adsorption entropy and the Gibbs free energy decreased with the increasing of the number of Ca2+.The varation was explained being caused by the changing of charge distribution in the zeolites and the aperture after Na+ was exchanged by Ca2+.

关键词

Keywords

references

Rees L V C.Zeolites as catalysts,sorbents and detergent builders[J].Stud.Surf.Sci.Catal.,1999,46:661-668.

Li P Y,Teze F H.Adsorption separation of N2,O2,CO2and CH4gases by LTA[J].Microporous and Mecroporous Materials,2007,98:94-102.

Meurig T J.The societal significance of catalysis and the growing practical importance of single-site heterogeneous catalysts[J].Proceedings of The Royal Society A-mathematical Physical and Engineering Sciences,2012,468(2143):1884-1903.

Rajamani G,Enrique I.The roles of entropy and enthalpy in stabilizing ion-pairs at transition states in zeolite acid catalysis[J].Accounts of Chemical Research,2012,45(2):229-238.

Fan Weibin,Wei Shuquan,Toshiyuki Y,et al.Synthesis,characterization,and catalytic properties of H-Al-YNU-1and H-Al-MWW with different Si/Al ratios[J].Journal of Catalysis,2009,266(2):268-278.

García-Pérez E,Dubbeldam D,Maesen T L M,et al.Influence of cation Na/Ca ratio on adsorption in LTA 5A:A systematic molecular simulation study of alkane chain length[J].J.Phys.Chem.B,2006,110(47):23968-23976.

Peters R W,Clark S,Gil M.Diesel Exhaust treatment using catalysts/zealots[M].University Transportation Center for Alabama,2004:38-40.

Jarian V,Vera M,Pegie C.Synthesis and catalytic applications of combined zeolitic/esoporous materials[J].Beilstein Journal of Nanotechnology,2011,2:785-801.

Katsanos N A,Thede R,Roubani-Kalantzopoulou F.Diffusion,adsorption and catalytic studies by gas chromatography[J].Journal of Chromatography A,1998,795:133-184.

Xie J,Bousmina M,Xu G,et al.Inverse gas chromatography studies of alkali cation exchanged X-zeolites[J].Journal of Molecular Catalysis A:Chemical,1998,135:187-197.

Inel O,Topaloglu D,Ayseg A,et al.Evaluation of the thermodynamic parameters for the adsorption of some hydrocarbons on4A and13X zeolites by inverse gas chromatography[J].Chemical engineering,2002,88:255-262.

Diaz E,Ordonez S,Vega A,et al.Characterization of Co,Fe and Mn-exchanged zeolites by inverse gas chromatography[J].Journal of Chromatography A,2004,1049:161-169.

Miano F.Adsorption of hydrocarbon vapor mixtures onto zeolite5A[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,1996.110:95-104.

Widegren J A,Bruno T J.Enthalpy of adsorption for hydrocarbons on concrete by inverse gas chromatography[J].Journal of Chromatography A,2011,1218(28):4474-4477.

史秀锋.A型分子筛吸附的量子化学研究[D].太原:太原理工大学,2008.

庞先勇,谢鲜梅,李阳,等.分子筛吸附性质的气相色谱研究[J].分析科学学报,2004,20(6):565-568.Pang Xianyong,Xie Xianmei,Li Yang,et al.Study on adsorption characteristics of zeol ite by gas chromatography[J].Journal of Analytical Science,2004,20(6):565-568.(in Chinese)

庞先勇,田取珍,贾兆昌,等.N2和CO在5A MS上吸附热力学的气相色谱研究[J].化学工程,2007,35(2):45-51.Pang Xianyong,Tian Quzhen,Jia Zhaochang,et al.Adsorption thermodynamics of N2and CO on5A zeolite with gas chromatography[J].Chemical Engineering,2007,35(2):45-51(in Chinese)

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

OFDM中基于DFT的自适应信道估计算法

《中北大学学报(自然科学版》》征稿简则

茶叶生物炭磁性材料对水中重金属铬的超声吸附研究

鱼类自主游动时摆频与摆幅的最优组合研究

基于机器学习的复合材料结构设计与性能表征研究进展

A型分子筛单胞内Ca2+对吸附热力学的影响

Effect of Ca2+ in the Unit Cell of A Zeolites on Adsorption Thermodynamics

DOI：

摘要

Abstract

关键词

Keywords

references

A型分子筛单胞内Ca²⁺对吸附热力学的影响

Effect of Ca²⁺ in the Unit Cell of A Zeolites on Adsorption Thermodynamics