首页|Efficient construction of calcium fluoride nanoaggregates for enhanced water vapor adsorption

Efficient construction of calcium fluoride nanoaggregates for enhanced water vapor adsorption

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Calcium fluoride(CaF2)is an ideal adsorbent for the dehydration of gaseous hydrogen fluoride(HF)containing water vapor.In this work,a novel CaF2 absorbent,spherical CaF2 nanoaggregates(NAs)with a closely packed structure,was proposed and efficiently fabricated by spray drying technology.As the building blocks of CaF2 NAs,the CaF2 nanoparticles(NPs)were prepared by the addition of excess cal-cium ions(Ca2+)or fluorine ions(F-)in the synthesis.The results indicated that the CaF2 NPs synthesized by excess Ca2+and the corresponding NAs exhibited much better water vapor adsorption properties than their counterparts by excess F-,owing to higher zeta potentials.More importantly,whether excess Ca2+or F-,CaF2 NAs had further enhanced water vapor adsorption capacity compared to primary CaF2 NPs,possibly owing to their unique nano-micro secondary structures and higher surface areas.This work has great potential in the development of high-performance absorbents for separating moisture from cor-rosive gas HF.

CaF2 nanoaggregatesWater vapor adsorptionSpray drying

Dan-Lei Yang、Jing Cao、Rong-Kun Liu、Jie-Xin Wang

展开 >

School of Life Sciences and Chemical Engineering,Jiangsu Second Normal University,Nanjing,210013,China

State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China

Research Center of the Ministry of Education for High Gravity Engineering and Technology,Beijing University of Chemical Technology,Beijing,100029,China

Petrochemical Research Institute,PetroChina,Beijing,102206,China

展开 >

国家重点研发计划国家自然科学基金

2021YFA120130122288102

2024

10.1016/j.partic.2023.11.008

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.89(6)
  • 22