IR microspectroscopic investigation of the acid sites in metal substituted AlPO4-5 molecular sieves Part 1.Sorption of benzene and strong bases

文献情報

出版日

DOI 10.1039/A807477A

インパクトファクター 3.676

著者

原文を見る

要旨

The functional groups of metal substituted aluminophosphate (MeAPO-5) materials and their interactions with probe molecules were investigated by insitu IR microspectroscopy. All metal substituted samples showed IR bands which can be assigned to the bridging hydroxy groups. Their acid strength determined from the perturbation of the bands by sorption of benzene decreased in the sequence SAPO-5>MgAPO-5> BeAPO-5>CoAPO-5. Sorption of strong bases (ammonia and pyridine) induced the cleavage of at least one bond between the framework metal cation and oxygen at the bridging hydroxy groups leading to strong coordinative interactions of the base molecules with the framework metal cations.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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.