Synthesis, characterization and catalytic properties of ZrAPO-5

Dongare, Mohan K.; Sabde, D. P.; Shaikh, R.A.; Kamble, K.R.; Hegde, S.G.

doi:10.1016/s0920-5861(98)00433-7

Cited by 32 publications

(20 citation statements)

References 24 publications

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“…As described in Figure 7a, Figures 7b-c, and the band shift was observed due to the incorporation of cobalt or iron. Those results were consistent with previous studies [35][36][37][38] and further proved that the three compounds were with the same structure.…”

Section: Structure Analysissupporting

confidence: 93%

Simple and safe synthesis of microporous aluminophosphate molecular sieves by ionothermal approach

Han

Wang

et al. 2007

AIChE Journal

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in Wiley InterScience (www.interscience.wiley.com).Pure and transition metal (Co, Fe) containing aluminophosphate molecular sieves were synthesized ionothermally by using a series of imidazolium-based ionic liquids as both solvent and structure-directing agent. Adopting this novel method, a large number of volatile organic solvents can be avoided, and the synthesis can be operated at near atmospheric pressure. Thus, the preparation becomes simple and safe compared with hydrothermal and solvothermal method. And, the recycling of ionic liquid can make the industrial synthesis process more efficient and environmental. The powder XRD patterns and FT-IR spectra displayed that all the synthesized samples were with sodalite structure. Crystal data for Co-substituted analogue: cubic, Pm-3n, a 5 9.0192 Å, and magnetic property analysis showed weak antiferromagnetic interactions between Co ions. The influences of synthesis conditions such as P 2 O 5 /Al 2 O 3 ratio, crystallization temperature, and the variety of ionic liquids on the character of the products were systematically investigated. In addition, the recycling of ionic liquid was studied based on the NMR and TGA.

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Section: Structure Analysissupporting

confidence: 93%

Simple and safe synthesis of microporous aluminophosphate molecular sieves by ionothermal approach

Han

Wang

et al. 2007

AIChE Journal

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“…It indicates the weak Brønsted acid site of HZrAlPO-5 where the proton is bounded strongly to the bridging oxygen. The weaker acid site of H-ZrAlPO-5 compared to that of H-SiAlPO-5 was observed experimentally using FT-IR spectroscopy of adsorbed ammonia [10].…”

Section: Structural Models and Computational Detailsmentioning

confidence: 73%

“…in environmental catalysis [9]. Furthermore, Zr-AlPO-5 has been synthesized and characterized aiming to increase the catalyst life for the skeletal isomerization of linear butanes and the isomerization of toluidines [10].…”

Section: Introductionmentioning

confidence: 99%

The acidic properties of H-MeAlPO-5 (Me=Si, Ti, or Zr): A periodic density functional study

Elanany¹,

Vercauteren²,

Kubo³

et al. 2006

Journal of Molecular Catalysis A: Chemical

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“…Hence, we attempted to synthesize zirconium incorporated aluminophosphate molecular sieve. In recent years some research groups reported synthesis of ZrAPO-5, ZrAPO-11 and ZrSAPO-11 [17][18][19]. We too had reported synthesis of ZrAPO-11 [20].…”

Section: Introductionmentioning

confidence: 93%

Incorporation of zirconium in medium-pore aluminophosphate molecular sieves with AFO framework

Chakrabortty¹,

Ganguli

Satyanarayana

2011

Microporous and Mesoporous Materials

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a b s t r a c tZirconium substituted medium pore microporous aluminophosphate molecular sieve ZrAPO-41 was prepared by hydrothermal synthesis under autogenous pressure. The formation of the pure phase was confirmed by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM).The thermal behaviour of the material was investigated by carrying out thermogravimetric/differential thermal analysis (TGA/DTA).The zirconium environment was studied by magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy which suggests incorporation of zirconium into the framework. UV-Visible diffuse reflectance study also supports the claim. The temperature programmed desorption (TPD) of ammonia reveals that the acidity of ZrAPO-41 samples is higher than that of pure AlPO 4 -41. The catalytic activity of the samples was investigated through phenol hydroxylation reaction. The result show higher catalytic activity for ZrAPO-41 samples compared to AlPO 4 -41.

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Synthesis, characterization and catalytic properties of ZrAPO-5

Cited by 32 publications

References 24 publications

Simple and safe synthesis of microporous aluminophosphate molecular sieves by ionothermal approach

Simple and safe synthesis of microporous aluminophosphate molecular sieves by ionothermal approach

The acidic properties of H-MeAlPO-5 (Me=Si, Ti, or Zr): A periodic density functional study

Incorporation of zirconium in medium-pore aluminophosphate molecular sieves with AFO framework

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