A new type of super hydrophilic SiO2 aerogel for use as a potential NH3 sorbent

Benlan Lin; Juqi Ruan; Sheng Cui; Xiaodong Shen; Shuwen Yu

doi:10.2174/1573413710666140904001135

A new type of super hydrophilic SiO₂ aerogel for use as a potential NH₃ sorbent

Benlan Lin, Juqi Ruan, Sheng Cui, Xiaodong Shen, Shuwen Yu

材料科学与工程学院

Nanjing Tech University

科研成果: 期刊稿件 › 文章 › 同行评审

5 引用（Scopus）

摘要

A super hydrophilic SiO₂ aerogel (SHSA) was prepared using the sol-gel method and CO₂ supercritical drying technology, yielding a specific surface area of 680.08 m²/g and a total pore volume of 3.95 cm³/g. The hydrophilic property of the SHSA was investigated and showed a maximum water adsorption capacity (q_m) of 7.79 ml/g. NH3 adsorption tests were conducted and were compared with the results for pure SiO₂ aerogel (PSA) under non-water vapor and water vapor treating conditions. The effect of water vapor on SHSA was found to be larger than its effect on PSA. A physical chemical adsorption process of NH3 appeared in the presence of water vapor on the SHSA surface, giving a maximum adsorption capacity (Q_m) of 193.66 mg/g. The regenerability of SHSA was also investigated, and the loss percentage of Q_m was found to be 22.28% over 10-cycle adsorption tests. The results indicate that SHSA is a promising candidate for use as an NH₃ sorbent.

源语言	英语
页（从-至）	120-128
页数	9
期刊	Current Nanoscience
卷	11
期	1
DOI	https://doi.org/10.2174/1573413710666140904001135
出版状态	已出版 - 1 1月 2015

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abstract = "A super hydrophilic SiO2 aerogel (SHSA) was prepared using the sol-gel method and CO2 supercritical drying technology, yielding a specific surface area of 680.08 m2/g and a total pore volume of 3.95 cm3/g. The hydrophilic property of the SHSA was investigated and showed a maximum water adsorption capacity (qm) of 7.79 ml/g. NH3 adsorption tests were conducted and were compared with the results for pure SiO2 aerogel (PSA) under non-water vapor and water vapor treating conditions. The effect of water vapor on SHSA was found to be larger than its effect on PSA. A physical chemical adsorption process of NH3 appeared in the presence of water vapor on the SHSA surface, giving a maximum adsorption capacity (Qm) of 193.66 mg/g. The regenerability of SHSA was also investigated, and the loss percentage of Qm was found to be 22.28% over 10-cycle adsorption tests. The results indicate that SHSA is a promising candidate for use as an NH3 sorbent.",

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author = "Benlan Lin and Juqi Ruan and Sheng Cui and Xiaodong Shen and Shuwen Yu",

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T1 - A new type of super hydrophilic SiO2 aerogel for use as a potential NH3 sorbent

AU - Lin, Benlan

AU - Ruan, Juqi

AU - Cui, Sheng

AU - Shen, Xiaodong

AU - Yu, Shuwen

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A super hydrophilic SiO2 aerogel (SHSA) was prepared using the sol-gel method and CO2 supercritical drying technology, yielding a specific surface area of 680.08 m2/g and a total pore volume of 3.95 cm3/g. The hydrophilic property of the SHSA was investigated and showed a maximum water adsorption capacity (qm) of 7.79 ml/g. NH3 adsorption tests were conducted and were compared with the results for pure SiO2 aerogel (PSA) under non-water vapor and water vapor treating conditions. The effect of water vapor on SHSA was found to be larger than its effect on PSA. A physical chemical adsorption process of NH3 appeared in the presence of water vapor on the SHSA surface, giving a maximum adsorption capacity (Qm) of 193.66 mg/g. The regenerability of SHSA was also investigated, and the loss percentage of Qm was found to be 22.28% over 10-cycle adsorption tests. The results indicate that SHSA is a promising candidate for use as an NH3 sorbent.

AB - A super hydrophilic SiO2 aerogel (SHSA) was prepared using the sol-gel method and CO2 supercritical drying technology, yielding a specific surface area of 680.08 m2/g and a total pore volume of 3.95 cm3/g. The hydrophilic property of the SHSA was investigated and showed a maximum water adsorption capacity (qm) of 7.79 ml/g. NH3 adsorption tests were conducted and were compared with the results for pure SiO2 aerogel (PSA) under non-water vapor and water vapor treating conditions. The effect of water vapor on SHSA was found to be larger than its effect on PSA. A physical chemical adsorption process of NH3 appeared in the presence of water vapor on the SHSA surface, giving a maximum adsorption capacity (Qm) of 193.66 mg/g. The regenerability of SHSA was also investigated, and the loss percentage of Qm was found to be 22.28% over 10-cycle adsorption tests. The results indicate that SHSA is a promising candidate for use as an NH3 sorbent.

KW - Aerogel

KW - Physical-chemical adsorption

KW - Regenerability

KW - Sorbent

KW - Super hydrophilic

KW - Water vapor treating

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A new type of super hydrophilic SiO2 aerogel for use as a potential NH3 sorbent

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A new type of super hydrophilic SiO₂ aerogel for use as a potential NH₃ sorbent