改性球形活性炭对氨气吸附性能的研究

doi:10.11962/1006-4990.2020-0318

Abstract

Abstract:

The adsorption performance of spherical activated carbon impregnated with different metal salt solutions for ammonia and the optimal ratio of the same impregnant were studied.The influence of different impregnation ratio on the surface morphology, phase structure and pore size distribution on impregnated carbon samples were investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Quanta adsorption instrument.The adsorption performance of the unmodified carbon and impregnated carbon for ammonia was studied by the fixed bed adsorption device.The results showed that the type of impregnant had a great influence on the adsorption performance of ammonia.Under the same impregnation conditions, the activated carbon impregnated with cobalt chloride had the best adsorption performance for ammonia.The sample with 50% impregnation ratio of cobalt chloride had the highest ammonia adsorption capacity up to 54.05 mg/mL, which was 37 times of the unmodified carbon.The physicochemical properties and temperature programmed desorption characteristics of the samples after ammonia adsorption were analyzed.The results showed that[Co（NH₃）₆]Cl₃ was formed by the reaction of cobalt chloride with ammonia.

Key words: spherical activated carbon, cobalt chloride, impregnated carbon, ammonia, adsorption capacity

CLC Number:

O647.32

Jin Qingqing,Liang Xiaoyi,Zhang Jia′nan,Zhou Xiaolong. Study on adsorption performance of modified spherical activated carbon for ammonia[J]. Inorganic Chemicals Industry, 2021, 53(4): 61-66.

Figures/Tables 13

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References 17

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浸渍比/ %	比表面积/（m²·g^-1）		总孔容/（cm³·g^-1）		微孔孔容/（cm³·g^-1）
浸渍比/ %	吸附前	吸附后	吸附前	吸附后	吸附前	吸附后
0	1 595.62	1 544.10	1.063	0.913	0.620	0.596
10	1 393.31	1 234.10	0.877	0.787	0.537	0.483
20	1 207.72	964.56	0.751	0.702	0.466	0.374
30	1 086.06	815.13	0.622	0.523	0.424	0.309
40	963.66	424.51	0.524	0.396	0.376	0.149
50	851.91	447.08	0.470	0.359	0.333	0.308
60	792.10	471.60	0.472	0.381	0.308	0.172

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on adsorption performance of modified spherical activated carbon for ammonia

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