The “silica garden’' as a Brønsted acid catalyst
Literature Information
The “silica garden’', an amorphous aluminosilicate produced from a solution of sodium silicate seeded with crystalline aluminium nitrate, has been examined by FTIR, TGA, solid-state NMR and catalytic testing. The silica garden is a Brønsted acid catalyst and we characterize its porosity, acidity and catalytic activity. The as-synthesized (AS) and H+-exchanged (H-AS) samples have BET surface areas of 148 and 161 g-1, respectively, with corresponding pore volumes of 0.36 and 0.31 cm3 g-1 and a broad distribution of pore sizes (30–1000 Å in diameter). The average pore size for AS and H-AS is 116 and 88 Å, respectively. The presence of Brønsted sites in the H+-exchanged samples was confirmed by FTIR of adsorbed pyridine. The population of Brønsted acid sites in the H+-exchanged sample with Si/Al=5.3 is lower than in a commercial amorphous aluminosilicate (ASA) with Si/Al=12 because, as NMR reveals, H-AS has proportionally more non-acid generating 6-coordinate aluminium. Catalytic tests reveal that, despite this, the acid sites in H-AS are stronger than in ASA.
Related Literature
Mechanistic insights into the catalytic reaction of ferulic acid decarboxylase from Aspergillus niger: a QM/MM study
Ge Tian, Yongjun Liu
DOI: 10.1039/C6CP08811B
Ultrafast excited-state relaxation of a binuclear Ag(i) phosphine complex in gas phase and solution
S. V. Kruppa, F. Bäppler, W. Klopper, S. P. Walg, W. R. Thiel, R. Diller
DOI: 10.1039/C7CP04128D
Structural, optical and phonon properties of formate-based MOF phosphors with ethylammonium cations
M. Ptak, K. Pasińska, P. Głuchowski, A. Łukowiak, A. Ciupa
DOI: 10.1039/C7CP04005A
The photoluminescence, thermal properties and tunable color of Na1−xAl1+2xSi1−2xO4:xCe3+/Tb3+/Dy3+via energy transfer: a single-component multicolor-emitting phosphor
Chengyi Xu, Yanhua Song, Hongxia Guan, Ye Sheng, Pingchuan Ma, Xiuqing Zhou, Zhan Shi, Haifeng Zou
DOI: 10.1039/C7CP02789C
On the critical Casimir interaction between anisotropic inclusions on a membrane
Jorge Benet, Fabien Paillusson, Halim Kusumaatmaja
DOI: 10.1039/C7CP03874G
Multiscale simulations for understanding the evolution and mechanism of hierarchical peptide self-assembly
Qianli Zou
DOI: 10.1039/C7CP01923H
The excited-state decay mechanism of 2,4-dithiothymine in the gas phase, microsolvated surroundings, and aqueous solution
Bin-Bin Xie, Qian Wang, Wei-Wei Guo, Ganglong Cui
DOI: 10.1039/C7CP00478H
Ferrocene and ferrocenium inclusion compounds with cucurbiturils: a study of metal atom dynamics probed by Mössbauer spectroscopy
Clara I. R. Magalhães, Ana C. Gomes, André D. Lopes, Isabel S. Gonçalves, Martyn Pillinger, Eunyoung Jin, Ikjin Kim, Young Ho Ko, Israel Nowik, Rolfe H. Herber
DOI: 10.1039/C7CP04416J
Spin polynomial similarity transformation for repulsive Hamiltonians: interpolating between coupled cluster and spin-projected unrestricted Hartree–Fock
Matthias Degroote, Jinmo Zhao, Yiheng Qiu
DOI: 10.1039/C7CP04075J
Tunable AIEE fluorescence constructed from a triphenylamine luminogen containing quinoline – application in a reversible and tunable pH sensor
Mengmeng Zhang, Wen Yang, Tingfeng Gong, Weiqun Zhou, Renyu Xue
DOI: 10.1039/C7CP03234J
You might also like
What are the main uses of 4-Nitrophenyl phosphate disodium salt hexahydrate (CAS: 333338-18-4)?
4-Nitrophenyl phosphate disodium salt hexahydrate is primarily used as a substra...
What are the main uses of 2-(Trifluoromethyl)-1,3-oxazole-4-carboxylic Acid (CAS: 1060816-01-4)?
2-(Trifluoromethyl)-1,3-oxazole-4-carboxylic Acid (CAS: 1060816-01-4) is widely ...
How should 2-Fluoro-4-biphenylcarboxylic acid (CAS: 137045-30-8) be stored?
2-Fluoro-4-biphenylcarboxylic acid should be stored in a cool, dry place at room...
What industries use Prednisolone-21-Carboxylic Acid (CAS: 61549-70-0)?
Prednisolone-21-Carboxylic Acid is primarily used in the pharmaceutical industry...
How should 4-(Hydrazinomethyl)-1,2,3-benzenetriol (CAS: 3614-72-0) be stored?
4-(Hydrazinomethyl)-1,2,3-benzenetriol (CAS: 3614-72-0) should be stored in a co...
What industries use 4-Amino-1-methyl-1H-pyrazole-5-carboxylic acid hydrochloride (CAS: 92534-70-8)?
4-Amino-1-methyl-1H-pyrazole-5-carboxylic acid hydrochloride (CAS: 92534-70-8) i...
What regulatory guidelines apply to dehydropachymic acid (CAS: 77012-31-8)?
Dehydropachymic acid (CAS: 77012-31-8) is regulated by various agencies. It fall...
What is the market or research trend for 6-[(2,2-Dimethylpropanoyl)amino]nicotinic acid (CAS: 898561-66-5)?
The market and research trends for 6-[(2,2-Dimethylpropanoyl)amino]nicotinic aci...
How should 1,10-Phenanthroline-2,9-dicarbaldehyde (CAS: 57709-62-3) be stored?
1,10-Phenanthroline-2,9-dicarbaldehyde should be stored in a cool, dry place awa...
How is 5-Carbamoyl-11-oxo-10,11-dihydro-5H-dibenzo[b,f]azepin-10-yl acetate (CAS: 113952-21-9) typically synthesized?
5-Carbamoyl-11-oxo-10,11-dihydro-5H-dibenzo[b,f]azepin-10-yl acetate can be synt...
Source Journal
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.














