当前位置: X-MOL 学术Macromol. Chem. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Salts Induced Formation of Hierarchical Porous ZIF‐8 and Their Applications for CO2 Sorption and Hydrogen Generation via NaBH4 Hydrolysis
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-03-10 , DOI: 10.1002/macp.202000031
Hani Nasser Abdelhamid 1
Affiliation  

Despite the great potential of two different pore regimes (hierarchical porous (HP) structure), HP‐zeolitic imidazolate frameworks‐8 (HPZIF‐8) can be efficient catalysts for hydrogen generation via hydride hydrolysis, and as adsorbents for CO2 gas adsorption. Herein, HPZIF‐8, and leaf‐like ZIF (ZIF‐L) are synthesized via a simple and environmentally friendly procedure using layered hydroxide nitrate of zinc (Z5HN) as a metal source and simple inorganic salt as a modulator. Z5HN nanosheets undergo topotactic transformation to simonkolleite (Zn5(OH)8Cl2·H2O) that can be converted to the pure phase of HPZIF‐8. The concentration of the salts tunes the textural properties of the final product. Applications of HPZIF‐8 and ZIF‐L for CO2 sorption exhibit excellent adsorption properties with increases of 25% due to the presence of cations in the frameworks. ZIF‐8 shows exceptional high catalytic activity for hydrogen generation via the hydrolysis of sodium borohydride. The simple synthesis of ZIF‐8 as well as their good performance as adsorbent and catalyst ensure the potential for industrial and commercial uses.

中文翻译:

盐诱导的分层多孔ZIF-8的形成及其在NaBH4水解过程中的CO2吸附和制氢中的应用

尽管存在两种不同的孔隙结构(分层多孔(HP)结构)的巨大潜力,但HP沸石咪唑酸酯骨架8(HPZIF-8)可以有效地通过氢化物水解产生氢气,并作为CO 2气体吸附的吸附剂。本文中,HPZIF-8和叶状ZIF(ZIF-L)是通过简单且环保的方法合成的,使用锌的层状氢氧化硝酸锌(Z 5 HN)作为金属源,简单的无机盐作为调节剂。Z 5 HN纳米片经过全向性转变为新锰铁矿(Zn 5(OH)8 Cl 2 ·H 2O)可以转换为HPZIF-8的纯相。盐的浓度调节最终产品的质构性质。由于骨架中阳离子的存在,HPZIF-8和ZIF-L在CO 2吸附方面的应用表现出出色的吸附性能,增加了25%。ZIF-8对硼氢化钠的水解产生氢气具有极高的催化活性。ZIF-8的简单合成及其作为吸附剂和催化剂的良好性能确保了工业和商业用途的潜力。
更新日期:2020-03-10
down
wechat
bug