Effect of Mg2+ content in ion-exchanged Shengli lignite on its equilibrium adsorption water content and its mechanism

doi:10.1016/j.cjche.2014.11.019

›› 2015, Vol. 23 ›› Issue (2): 456-460.DOI: 10.1016/j.cjche.2014.11.019

• 研究简报 • 上一篇

Effect of Mg²⁺ content in ion-exchanged Shengli lignite on its equilibrium adsorption water content and its mechanism

Xiangchun Liu, Li Feng, Xinhua Wang, Ying Zhang, Haiyan Tang

Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining & Technology, Jiangsu 221116, China

收稿日期:2013-06-10 修回日期:2013-10-12 出版日期:2015-02-28 发布日期:2015-03-01
通讯作者: Li Feng
基金资助:
Supported by the National Basic Research Program of China (2012CB214900), the National Natural Science Foundation of China (51274197), the 111 Project (B12030) and the Fundamental Research Funds for the Central Universities (2014XT05).

Effect of Mg²⁺ content in ion-exchanged Shengli lignite on its equilibrium adsorption water content and its mechanism

Xiangchun Liu, Li Feng, Xinhua Wang, Ying Zhang, Haiyan Tang

Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining & Technology, Jiangsu 221116, China

Received:2013-06-10 Revised:2013-10-12 Online:2015-02-28 Published:2015-03-01
Supported by:
Supported by the National Basic Research Program of China (2012CB214900), the National Natural Science Foundation of China (51274197), the 111 Project (B12030) and the Fundamental Research Funds for the Central Universities (2014XT05).

摘要/Abstract

摘要： Mg ion-exchanged samples were prepared with acid-washed Shengli lignite. The chemical composition of the ash of the rawsamplewas determined by X-ray fluorescence. The equilibriumadsorptionwater contents of samples were determined in a range of relative humidity. The ion-exchange process was characterized by FT-IR, ash content, and pH value. A possible mechanism is proposed for equilibrium adsorption water of ion-exchanged samples at different humidities. The extent of ion-exchange reaction between Mg²⁺ and lignite is controlled by the concentration of Mg²⁺ in MgSO₄ solution. The effect of Mg²⁺ on equilibrium adsorption water content varies with relative humidity and content ofMg²⁺. The factor that controls equilibriumadsorptionwater content at low relative humidity is water interactions with sorption sites, which are Mg²⁺-carboxyl group complex. At middle relative humidity capillary force between Mg²⁺-water clustersMg+(H₂O)_n and capillary is more important. At high relative humidity, free water-free water interactions are more significant.

关键词: Ion-exchange, FT-IR, Equilibrium adsorption water content, Surface

Abstract: Mg ion-exchanged samples were prepared with acid-washed Shengli lignite. The chemical composition of the ash of the rawsamplewas determined by X-ray fluorescence. The equilibriumadsorptionwater contents of samples were determined in a range of relative humidity. The ion-exchange process was characterized by FT-IR, ash content, and pH value. A possible mechanism is proposed for equilibrium adsorption water of ion-exchanged samples at different humidities. The extent of ion-exchange reaction between Mg²⁺ and lignite is controlled by the concentration of Mg²⁺ in MgSO₄ solution. The effect of Mg²⁺ on equilibrium adsorption water content varies with relative humidity and content ofMg²⁺. The factor that controls equilibriumadsorptionwater content at low relative humidity is water interactions with sorption sites, which are Mg²⁺-carboxyl group complex. At middle relative humidity capillary force between Mg²⁺-water clustersMg+(H₂O)_n and capillary is more important. At high relative humidity, free water-free water interactions are more significant.

Key words: Ion-exchange, FT-IR, Equilibrium adsorption water content, Surface

Xiangchun Liu, Li Feng, Xinhua Wang, Ying Zhang, Haiyan Tang. Effect of Mg²⁺ content in ion-exchanged Shengli lignite on its equilibrium adsorption water content and its mechanism[J]. , 2015, 23(2): 456-460.

参考文献

[1] K. Norinaga, H. Kumagai, J. Hayashi, T. Chiba, Classification ofwater sorbed in coal on the basis of congelation characteristics, Energ. Fuel 12 (3) (1998) 574-579.
[2] F. Yi, A.L. Chaffee, M. Marshall, W.R. Jackson, Lignite-water interactions studied by phase transition—differential scanning calorimetry, Fuel 84 (12/13) (2005) 1557-1562.
[3] C.Z. Li, Advances in the Science of Victorian Brown Coal, Chemical Industry Press, Beijing, 2009.
[4] S. Murata, M. Hosokawa, K. Kidena, M. Nomura, Analysis of oxygen-functional groups in brown coals, Fuel Process. Technol. 67 (3) (2000) 231-243.
[5] F. Yi, C.F. Zhang, M. Marshall, W.R. Jackson, A.L. Chaffee, D.J. Allardice, The effect of cation content of some raw and ion-exchanged Victoria lignites on their equilibrium moisture content and surface area, Fuel 86 (17/18) (2007) 2890-2897.
[6] A. Gosiewska, J. Drelich, J.S. Laskowski, M. Pawlik, Mineral matter distribution on coal surface and its effect on coal wettability, J. Colloid Interface Sci. 247 (1) (2002) 107-116.
[7] M.L. Gorbaty, S.C. Mraw, J.S. Gethner, D. Brenner, Coal physical structure: porous rock and macromolecular network, Fuel Process. Technol. 12 (1986) 31-49.
[8] H.Watanabe, S. Iwata, K. Hashimoto, F. Misaizu, K. Fuke,Molecular orbital studies of the structures and reactions of singly charged magnesium ion with water clusters, Mg+(H₂O)_n, J. Am. Chem. Soc. 117 (2) (1995) 755-763.
[9] C. Delphine, B. Philippe, Water sorption on coals, J. Colloid Interface Sci. 344 (2) (2010) 460-467.
[10] D.J. Allardice, L.M. Clemowb, G. Favas, W.R. Jackson, M. Marshall, R. Sakurovs, The characterisation of different forms of water in low rank coals and some hydrothermally dried products, Fuel 82 (6) (2003) 661-667.
[11] S.Q. Zhang, G.G. Wu, Coal Chemistry, 2nd edition, China University of Mining and Technology Press, Xuzhou, 2009.
[12] G.Z. Hao, L.Y. Xin, Q.W. Liang, Humidity fixed points of saturated aqueous solutions of salts, Sens. World 12 (1999) 10-14.
[13] F. Yi, M. Marshal, W.R. Jackson, A.L. Chaffee, D.J. Allardice, A comparison of adsorption isotherms using different techniques for a range of raw, water- and acidwashed lignites, Fuel 85 (10/11) (2006) 1559-1565.
[14] G. Orhan, D. Ibrahim, D. Aydin, N. ünlü, M. Karaarslan, Subtractive-FTIR spectroscopy to characterize organic matter in lignite samples from different depths, Spectrochim. Acta A 96 (2012) 63-69.
[15] S. Supaluknari, F.P. Larkins, P. Redlich, W.R. Jackson, An FT-IR study of Australian coals: Characterization of oxygen functional groups, Fuel Process. Technol. 19 (2) (1988) 123-140.
[16] Y. Ohtsuka, K.M. Asami, Ion-exchanged calcium from calcium carbonate and lowrank coals: High catalytic activity in steam gasification, Energ. Fuel 10 (2) (1996) 431-435.
[17] K. Murakami, J.I. Ozaki, Y. Nishiyama, Effects of surface treatment on cation exchange properties of Australian brown coals, Fuel Process. Technol. 43 (1) (1995) 95-110.
[18] V.P. Evangelou, M.Marsi, M.A. Chappell, Potentiometric-spectroscopic evaluation of metal-ion complexes by humic fractions extracted from corn tissue, Spectrochim. Acta A 58 (2002) 2159-2175.
[19] M. Sert, L. Ballice,M. Yüksel, M. Sağlam, Effect of mineral matter on product yield in supercritical water extraction of lignite at different temperatures, J. Supercrit. Fluids 57 (3) (2011) 213-218.
[20] C.A. Eligwe, N.B. Okolue, Adsorption of iron (II) by a Nigerian brown coal, Fuel 73 (4) (1994) 569-572.
[21] J. Nishino, Adsorption of water vapor and carbon dioxide at carboxylic functional groups on the surface of coal, Fuel 80 (5) (2001) 757-764.
[22] C. Vogt, T. Wild, C. Bergins, K. Strau, J. Hulston, A.L. Chaffee, Mechanical/thermal dewatering of lignite. Part 4: Physico-chemical properties and pore structure during an acid treatment within the MTE process, Fuel 93 (2012) 433-442.

Effect of Mg²⁺ content in ion-exchanged Shengli lignite on its equilibrium adsorption water content and its mechanism

Effect of Mg²⁺ content in ion-exchanged Shengli lignite on its equilibrium adsorption water content and its mechanism

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	Peipei Ai, Huiqing Jin, Jie Li, Xiaodong Wang, Wei Huang. Ultra-stable Cu-based catalyst for dimethyl oxalate hydrogenation to ethylene glycol[J]. 中国化学工程学报, 2023, 60(8): 186-193.
[2]	Hui Jiang, Zijian Zhao, Ning Yu, Yi Qin, Zhengwei Luo, Wenhua Geng, Jianliang Zhu. Synthesis, characterization, and performance comparison of boron using adsorbents based on N-methyl-D-glucosamine[J]. 中国化学工程学报, 2023, 59(7): 16-31.
[3]	Meihua Zhu, Xingguo An, Tian Gui, Ting Wu, Yuqin Li, Xiangshu Chen. Effects of ion-exchange on the pervaporation performance and microstructure of NaY zeolite membrane[J]. 中国化学工程学报, 2023, 59(7): 176-181.
[4]	Junyang Liu, Luming Wang, Yuhang Bian, Chunshan Li, Zengxi Li, Jie Li. Liquid-phase esterification of methacrylic acid with methanol catalyzed by cation-exchange resin in a fixed bed reactor: Experimental and kinetic studies[J]. 中国化学工程学报, 2023, 58(6): 1-10.
[5]	Haike Li, Xindong Li, Guozai Ouyang, Lang Li, Zhaohuang Zhong, Meng Cai, Wenhao Li, Wanfu Huang. Tannic acid/Fe³⁺ interlayer for preparation of high-permeability polyetherimide organic solvent nanofiltration membranes for organic solvent separation[J]. 中国化学工程学报, 2023, 57(5): 17-29.
[6]	Bin Lin, Wenyao Chen, Nan Song, Zhihua Zhang, Qianhong Wang, Wei Du, Xinggui Zhou, Xuezhi Duan. Mechanistic insights into propylene oxidation to acrolein over gold catalysts[J]. 中国化学工程学报, 2023, 57(5): 39-49.
[7]	Aneela Sabir, Wail Falath, Muhammad Shafiq, Nafisa Gull, Maria Wasim, Karl I. Jacob. Effective desalination and anti-biofouling performance via surface immobilized MWCNTs on RO membrane[J]. 中国化学工程学报, 2023, 56(4): 33-45.
[8]	Zhongqi Ren, Jie Wang, Hewei Zhang, Fan Zhang, Shichao Tian, Zhiyong Zhou. Adsorption of rubidium ion from aqueous solution by surface ion imprinted materials[J]. 中国化学工程学报, 2023, 54(2): 1-10.
[9]	An Wang, Zhongyu Hou. Improving the energy efficiency of surface dielectric barrier discharge devices for plasma nitric oxide conversion utilizing active flow control[J]. 中国化学工程学报, 2023, 53(1): 270-279.
[10]	Jie Jiang, Wei Cheng, Qiuyu Tang, Xun Pan, Jinjin Li, Ling Zhao, Zhenhao Xi, Weikang Yuan. Multiblock poly(ether-b-amide) copolymers comprised of PA1212 and PPO-PEO-PPO with specific moisture-responsive and antistatic properties[J]. 中国化学工程学报, 2023, 53(1): 421-430.
[11]	Ting He, Songhong Yu, Jinhui He, Dejian Chen, Jie Li, Hongjun Hu, Xingrui Zhong, Yawei Wang, Zhaohui Wang, Zhaoliang Cui. Membranes for extracorporeal membrane oxygenator (ECMO): History, preparation, modification and mass transfer[J]. 中国化学工程学报, 2022, 49(9): 46-75.
[12]	Shuo Li, Jianlin Cao, Xiang Feng, Yupeng Du, De Chen, Chaohe Yang, Wenhua Wang, Wanzhong Ren. Insights into the confinement effect on isobutane alkylation with C₄ olefin catalyzed by zeolite catalyst: A combined theoretical and experimental study[J]. 中国化学工程学报, 2022, 47(7): 174-184.
[13]	Yu Zhang, Ling Zhao, Ziang Chen, Xinyong Li. Promotional effect for SCR of NO with CO over MnO_x-doped Fe₃O₄ nanoparticles derived from metal-organic frameworks[J]. 中国化学工程学报, 2022, 46(6): 113-125.
[14]	Fu Yang, Ruyi Wang, Shijian Zhou, Xuyu Wang, Yan Kong, Shuying Gao. Mesopore-encaged V-Mn oxides: Progressive insertion approach triggering reconstructed active sites to enhance catalytic oxidative desulfuration[J]. 中国化学工程学报, 2022, 45(5): 182-193.
[15]	Jun Pan, Xianli Xu, Zhaohui Wang, Shi-Peng Sun, Zhaoliang Cui, Lassaad Gzara, Iqbal Ahmed, Omar Bamaga, Mohammed Albeirutty, Enrico Drioli. Innovative hydrophobic/hydrophilic perfluoropolyether (PFPE)/polyvinylidene fluoride (PVDF) composite membrane for vacuum membrane distillation[J]. 中国化学工程学报, 2022, 45(5): 248-257.