Synthesis of NaHS zeolite using microwave assisted alkali activation of coal fly ash: preparation, mechanism, application

被引：5

作者：

Zhou, Tengteng ^{[1
]}

Liu, Yixuan ^{[1
]}

Xiao, Xinxin ^{[1
]}

Xu, Xiuli ^{[1
,2
]}

Dou, Jinxiao ^{[1
,3
]}

机构：

[1] Univ Sci & Technol Liaoning, Sch Chem Engn, Key Lab Adv Coal & Coking Technol Liaoning Prov, Anshan, Peoples R China

[2] Sinosteel Anshan Res Inst Thermo Energy Co Ltd, Res Inst Coal Chem, Anshan, Liaoning, Peoples R China

[3] Univ Sci & Technol Liaoning, Sch Chem Engn, Key Lab Adv Coal & Coking Technol Liaoning Prov, 189 Qianshan Middle Rd, Anshan 114051, Liaoning, Peoples R China

来源：

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2022年 / 44卷 / 04期

关键词：

Alkali fusion hydrothermal modification; coal fly ash; crystallization time; crystallization temperature; NaHS zeolite; CARBON-DIOXIDE; CONVERSION; ADSORPTION;

D O I：

10.1080/15567036.2022.2154413

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

High value-added NaHS zeolite was prepared using the microwave-assisted alkali fusion hydrothermal method from industrial solid waste coal fly ash as raw material without adding silicon and aluminum sources. The effect of mass ratio of alkali to coal fly ash, crystallization temperature, and crystallization time on the preparation of NaHS zeolite was investigated. The NaHS zeolite was characterized using XRD, SEM, BET, and FT-IR. The experimental results showed that the NaHS zeolite with complete crystal structure could be synthesized at m(sodium hydroxide):m(coal fly ash) = 2:1, crystallization temperature of 140 degrees C, and crystallization time of 48 h. The prepared HS zeolite had high purity, complete crystal structure, and uniform grain size (2 mu m). The NaHS zeolite was beneficial for CO2 adsorption properties with 110.9 cm(3)/g at 25 degrees C.

引用

页码：10506 / 10517

页数：12

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