The nature of cationic adsorption sites in alkaline zeolites—single, dual and multiple cation sites
文献信息
P. Nachtigall, M. R. Delgado, D. Nachtigallova, C. O. Arean
Gas adsorption on zeolites constitutes the base of many technological applications of these versatile porous materials. Quite often, especially when dealing with small molecules, individual extra-framework (exchangeable) cations are considered to be the adsorption site on which molecules coming from a gas phase form the corresponding adsorption complex. Nonetheless, while that can be the case in some instances, recent research work that combines variable temperature infrared spectroscopy with periodic DFT calculations showed that some types of adsorption sites involve two or more cations, which constitute dual and multiple cation sites, respectively. Adsorption complexes formed on these cationic adsorption sites differ in both structure and stability from those formed on a single cation alone. Examples concerning CO, CO2 and H2 adsorption on alkali and alkaline-earth metal exchanged zeolites are reviewed, with the double purpose of clarifying concepts and highlighting their relevance to practical use of zeolites in such fields as gas separation and purification, gas storage and heterogeneous catalysis.
相关文献
Polyurethane with an ionic liquid crosslinker: a new class of super shape memory-like polymers
Prasanta Kumar Behera, Prantik Mondal, Nikhil K. Singha
DOI: 10.1039/C8PY00549D
Self-assembly and multi-stimuli responsive behavior of PAA-b-PAzoMA-b-PNIPAM triblock copolymers
Fei Gao, Yaohui Xing, Yuan Yao, Liuying Sun, Yao Sun, Xiaohua He, Shaoliang Lin
DOI: 10.1039/C7PY01591G
A novel self-healing electrochromic film based on a triphenylamine cross-linked polymer
Rongzong Zheng, Jiaqiang Zhang, Chunyang Jia, Zhongquan Wan, Yaru Fan, Xiaolong Weng, Jianliang Xie, Longjiang Deng
DOI: 10.1039/C7PY01434A
Assembly of a visible light photoreactor: an inexpensive tool for bottlebrush polymer synthesis via photoiniferter polymerization
Kyle J. Arrington, John B. Matson
DOI: 10.1039/C7PY01741C
Force-induced cleavage of a labile bond for enhanced mechanochemical crosslinking
Shu Wang, Grant A. Knappe, Norman J. Wagner
DOI: 10.1039/C7PY01431G
Macrocycle-based topological azo-polymers: facile synthesis and unusual photoresponsive properties‡
Wei Song, Ruiyu Jiang, Lei Zhu
DOI: 10.1039/C6PY01743F
Self-assembly of random co-polymers for selective binding and detection of peptides
Bo Zhao, Mahalia A. C. Serrano, Jingjing Gao, Jiaming Zhuang
DOI: 10.1039/C7PY01947E
Photoinduced Fe-mediated atom transfer radical polymerization in aqueous media
Chao Bian, Yin-Ning Zhou, Jun-Kang Guo, Zheng-Hong Luo
DOI: 10.1039/C7PY01762F
您可能还喜欢
2-Bromo-4-chloro-1-(difluoromethyl)benzene(CAS号:1261476-50-9)的市场或研究趋势如何?
随着环保要求的提高和安全意识的增强,该化合物的研究和应用趋势正逐渐转向更安全、更环境友好的替代品。市场关注点主要集中在开发新型合成方法和绿色化学路径,以减少有害...
如何处理含有2,9 - 二苯基-1,10 - 菲罗啉(CAS号:25677-69-4)的废料?
处理含有2,9 - 二苯基 - 1,10 - 菲罗啉的废料时,应先将其收集在适当的容器中,避免与其他化学品混合。随后,可以通过水解或氧化等方法进行处理,直至达到...
处理(6-氯-吡嗪-3-基)-(4-乙基-哌嗪-1-基)-甲酮(CAS号:1178836-15-1)时应注意哪些实验室安全事项?
处理(6-氯-吡嗪-3-基)-(4-乙基-哌嗪-1-基)-甲酮时,应穿戴适当的个人防护装备(PPE),包括手套、护目镜和实验室外套。在通风橱中操作以确保良好的通...
处理(R)-2-氯-1-(2,4-二氯苯基)乙醇(CAS号:114446-57-0)时应注意哪些实验室安全事项?
在处理(R)-2-氯-1-(2,4-二氯苯基)乙醇时,应佩戴防护眼镜、实验室外套和手套,确保通风橱开启以减少接触和吸入的风险。避免直接接触皮肤和眼睛。处理过程中...
在合成中是否有3-氯-6-(3-氯哌啶-1-基)吡嗪(CAS号:1185310-37-5)的替代品?
可考虑使用类似结构的化合物作为替代品,如3-氯-6-(哌啶-1-基)吡嗪或3-氯-6-(2-氯哌啶-1-基)吡嗪,这些化合物在结构上与目标化合物相似,可能具有相...
苯并三氮唑-5-甲酸乙酯(CAS号:73605-91-1)通常如何合成?
该化合物可以通过乙酸乙酯与5-溴-1H-苯并三氮唑的反应合成,通常在无水条件下进行。合成过程中,需要使用适当的溶剂如乙酸乙酯,并在适当的温度下反应。该反应具有较...
什么是一水硫酸镁(CAS号:14168-73-1)?
一水硫酸镁是一种无机化合物,化学式为MgSO₄·H₂O,CAS号为14168-73-1。它由镁离子、硫酸根离子和一个结晶水分子组成,通常呈现为白色粉末或颗粒状固...
氘代-1,3-二氯-2-丙醇(CAS号:1173020-20-6)应用于哪些行业?
氘代-1,3-二氯-2-丙醇主要应用于医药和有机合成领域,作为研究化合物的氘代替代品,用于标记和追踪反应过程。此外,在聚合物和半导体生产中也有一定的应用潜力。
如何储存氰乙酸环己酯(CAS号:52688-11-6)?
氰乙酸环己酯应储存在阴凉、干燥、通风良好的环境中,远离火源和热源,防止阳光直射。储存容器应密封良好,避免与空气接触,防止发生不必要的反应。
2-碘-4-硝基苯胺(CAS号:6293-83-0)的市场或研究趋势如何?
目前,2-碘-4-硝基苯胺在医药和农药领域有一定的研究和应用,尤其是在开发新型药物和农药产品方面。然而,由于其潜在的环境和健康风险,行业正趋向于寻找更为安全和环...
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.












![4-[(4-Bromophenyl)sulfonyl]thiomorpholine structure 4-[(4-Bromophenyl)sulfonyl]thiomorpholine structure](https://cnstatic.chemtradehub.com/structs/223/223555-81-5-2d67.webp)

