A Sodalite-Type Porous Metal−Organic Framework with Polyoxometalate Templates: Adsorption and Decomposition of Dimethyl Methylphosphonate

Ma, Fengji; Liu, Shuxia; Sun, Chunyan; Liang, Dapeng; Ren, Guojian; Wei, Feng; Chen, Ya-Guang; Su, Zhong‐Min

doi:10.1021/ja109659k

Cited by 422 publications

(170 citation statements)

References 44 publications

Supporting

Mentioning

165

Contrasting

Unclassified

Order By: Relevance

“…Como o tratamento térmico de 30 horas apresentou maior quantidade de Hidrossodalita, esperou-se encontrar mais canais estreitos devido à presença de água no interior dos canais, que poderiam dificultar a passagem de certas moléculas, restringindo possivelmente sua utilização como catalisador na produção de biocombustível (MA et al, 2011;WOOLARD et al, 2002). Na técnica de adsorção de gases utilizando o método de BET foi possível caracterizar a área superficial específica, o volume de poros, assim como o estudo das isotermas de adsorção/dessorção que forneceram informações quanto o tipo de poros presentes nas amostras.…”

Section: Resultados E Discussõesunclassified

Transição de fases de zeólita do tipo Faujasita para Sodalita via tratamento térmico

et al. 2015

View full text Add to dashboard Cite

As zeólitas podem ser usadas em diversas funções como catalisadores (produção de biocombustíveis) e peneiras moleculares (tratamento de áreas contaminadas). Este trabalho tem como objetivo caracterizar as zeólitas obtidas na transição de uma zeólita semelhante à Faujasita para Sodalita, quando submetidos a diferentes tempos de tratamentos térmicos. As zeólitas sintetizadas foram caracterizadas por difração de raios X onde se identificou as fases cristalinas semelhante a Faujasita, Sodalita, SiO 2 e a presença de material amorfo. O tratamento térmico de 4 horas produziu zeólitas com estrutura cristalina semelhante à estrutura cristalina da Faujasita, apresentando sítios básicos, área superficial de 552,7 m 2 g -1 e volume de poros de 0,3391 cm 3 g -1 . Com o aumento do tempo do tratamento térmico houve transição para a fase Sodalita, contendo 0,277 mmol g -1 de sítios básicos ativos, com volume de poros de 0,0651 cm 3 g -1 e área superficial 11,38 m 2 g -1 . Pelo Método de Rietveld foi identificada e quantificada a presença de Sodalita e Hidrossodalita nas amostras com tempo de reação de 24 e 30 h. ResumoThe zeolites can have several functions as catalysts (biofuel production) and molecular sieves (treatment of contaminated areas). This study aims to characterize the zeolites obtained in the transition of a Faujasite like zeolite into a Sodalite, when submitted to different thermal treatment times. The synthesized zeolites were characterized by X-ray diffraction where the crystalline phases were identified: Faujasite, Sodalite, SiO 2 and amorphous material. The 4 hours heat treatment produces zeolite crystal structure similar to Faujasite, having basic sites, surface area of 552.7 m 2 g -1 , and pore volume of 0.3391 cm 3 g -1 . With increasing time of heat treatment was observed the transition to the Sodalite phase witch containing 0.277 mmol g -1 of basic active sites with surface area of 11.38 m 2 g -1 and pore volume of 0.0651 cm 3 g -1 . By the Rietveld method was identified and quantified the presence of Sodalite and Hidrossodalite in samples with 24 and 30 hours of reaction times.

show abstract

Section: Resultados E Discussõesunclassified

Transição de fases de zeólita do tipo Faujasita para Sodalita via tratamento térmico

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In particular, POM catalysts can participate in important industrial processes and provide unique models for the investigation of structure-activity relationships between molecules and extended solid materials. The diverse capability of POMs as an important doubly functional reagent (oxidative and catalytic properties) has been demonstrated with respect to many organic reactions [28,29].…”

Section: Introductionmentioning

confidence: 99%

Recent trends in the use of polyoxometalate-based material for efficient water oxidation

2011

View full text Add to dashboard Cite

Polyoxometalates (POMs), with their attractive topological and electronic properties, have been demonstrated over the last few decades to be efficient catalysts for many reactions. In a new direction, POMs having a purely inorganic framework are now being explored as efficient catalysts for water oxidation. This review focuses on very recent developments of POM-based catalysts for water oxidation to O 2 . In the very extensive family of POMs, tetra-core sandwich-type Ru-and Co-containing POM complexes, namely [Ru 4 O 4 (OH) 2 (H 2 O) 4 (-SiW 10 O 36 ) 2 ] 10 and [Co 4 (H 2 O) 2 (-PW 9 O 34 ) 2 ] 10 exhibit the ability to facilitate water oxidation under electrocatalytic and/or photocatalytic conditions. However, it is concluded that much work still needs to be done to explain the catalytic mechanisms and optimize these catalytic systems. In addition, recent trends in using ionic liquids as media to modify the electrolytic environment and enhance water oxidation are highlighted.

show abstract

“…Polyoxometalates (POMs) [7,8], a kind of soluble anionic metal oxide cluster with a wide range of magnetic [9], redox [10] and catalytic properties [11], are regarded as promising candidates for the design of new porous materials. To date, several novel POMs-based porous materials have been reported, for example: Liu and Su et al synthesized a series of MOFs in which the catalytic active Keggin polyoxoanions were alternately arrayed as noncoordinating guests in the cuboctahedral cages of a Cu-benzentricaboxylate-based metal-organic framework [12,13] [14,15]. In these compounds, the polyoxometalates act as guests or multiple metal nodes in the structure of MOFs.…”

Section: Introductionmentioning

confidence: 99%

Two new compounds with microporous constructed by Waugh-type polyoxoanion and transition metal ions

et al. 2011

View full text Add to dashboard Cite

Two new compounds with microporous Co 3 [MnMo 9 O 32 ]·15H 2 O (1) and Cu 3 [MnMo 9 O 32 ]·15H 2 O (2) have been synthesized, and characterized by IR, element analysis, TG and single-crystal X-ray analysis. The structure analyses reveal that compounds 1 and 2 are isostructural. In crystal, the Waugh-type polyoxoanions [MnMo 9 O 32 ] 6-are connected by Co 2+ or Cu 2+ cations to a 3D open-framework, which possesses channels along the [1 2 2] direction of approximately 8.27 × 11.97 Å. The photocatalytic performances of compounds 1 and 2 for photodegradation of RhB with UV irradiation have been studied, which show a good photocatalytic activity for photodegradation of RhB. porous materials, Waugh-type polyoxoanion, single-crystal structure, photocatalysis

show abstract

A Sodalite-Type Porous Metal−Organic Framework with Polyoxometalate Templates: Adsorption and Decomposition of Dimethyl Methylphosphonate

Cited by 422 publications

References 44 publications

Transição de fases de zeólita do tipo Faujasita para Sodalita via tratamento térmico

Transição de fases de zeólita do tipo Faujasita para Sodalita via tratamento térmico

Recent trends in the use of polyoxometalate-based material for efficient water oxidation

Two new compounds with microporous constructed by Waugh-type polyoxoanion and transition metal ions

Contact Info

Product

Resources

About