Host–guest synthesis and encapsulation of phosphotungstic acid in MIL-101 via “bottle around ship”: An effective catalyst for oxidative desulfurization

Hu, Xiaofu; Lu, Yukun; Dai, Fang; Liu, Chenguang; Liu, Yunqi

doi:10.1016/j.micromeso.2012.11.021

Cited by 146 publications

(64 citation statements)

References 53 publications

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“…2 (a). Compared to MIL101, the spectrum of HPW@MIL101 shows new characteristic peaks at 1082 cm -1 , 981cm -1 , 900 cm -1 and 826 cm -1 , which are attributed to the asymmetric stretching vibration of P-O, W=O, W-Ob-W and W-Oc-W, respectively [28,29].…”

Section: Characterization Of Hpw@mil101mentioning

confidence: 99%

“…MOFs are regarded as qualified supporters to load guest molecules such as phosphotungstic acid into the cavity [28][29][30][31][32]. Two methods have been reported for the loading of guest molecules: 1) a two-step approach to "impregnate" guest molecules by diffusion into as-synthesized MOFs; 2) a one-step method to "encapsulate" the guests during the synthesis of MOFs through mixing guest molecules with linkers and metal ions.…”

Section: Introductionmentioning

confidence: 99%

“…It is difficult for guest molecules to enter microporous windows smaller than their size, thus the amount of guest molecules is limited [28]. As for the second method, the particle size is difficult to control and will increase with loading content to even a micron scale [29,30].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Proton exchange nanohybrid membranes with high phosphotungstic acid loading within metal-organic frameworks for PEMFC applications

Zhang

Cao

et al. 2017

Electrochimica Acta

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Section: Characterization Of Hpw@mil101mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Proton exchange nanohybrid membranes with high phosphotungstic acid loading within metal-organic frameworks for PEMFC applications

Zhang

Cao

et al. 2017

Electrochimica Acta

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“…Encapsulation of catalytically active POMs into suitable porous supports is a useful approach for designing e cient heterogeneous catalysts and a variety of porous materials have been used for this purpose [19]. Metal-Organic Frameworks (MOFs) have been used as supports for the immobilization of POMs [20][21][22][23][24][25]. However, the di culties in their preparation on the one hand and their low stability in some reaction media on the other hand have limited their wide utilization in heterogeneous catalysis.…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of Keggin-type phosphotungstic acid into the mesopores of SBA-16 as a reusable heterogeneous catalyst for the epoxidation of olefins

Masteri‐Farahani

Modarres

2017

Scientia Iranica

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Abstract. A heterogeneous catalyst for the epoxidation of ole ns was prepared by encapsulating Keggin-type phosphotungstic acid (H3PW12O40) into the mesopores of SBA-16. After the encapsulation, the pore entrance size of SBA-16 was reduced through a silylation method to encompass the catalyst in the mesopores and allow easy di usion of the reactants and products during the catalytic process. The prepared catalyst was characterized by FT-IR and Inductively Coupled Plasma-Optical Emission Spectroscopies(ICP-OES), X-Ray Di raction (XRD), and Transmission Electron Microscopy (TEM). The analysis results revealed that the mesoporous nature of SBA-16 was conserved after encapsulation of the catalyst following the silylation step. The catalytic activity of the prepared material was assessed in the epoxidation of ole ns with H2O2. The heterogeneous catalyst was recovered and reused up to ve cycles without considerable decrease in activity.

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“…PTA is encapsulated in the MOFs pore structure during the coordination of metal ions with organic ligands to form a framework structure. (PTA @ MIL-101) [15][16][17]. PTA @ MIL-101 plays a good catalytic performance in desulfurization, denitrification and alcoholysis [18,19].…”

Section: Introductionmentioning

confidence: 99%

Influence of Strong Electronegativity Groups -Cl as the Adsorption Center of PTA@MIL-101-NH²-Cl for the Selective Hydrolysis of Cellulose into Glucose

Han¹,

Wang²,

Wan³

et al. 2017

Proceedings of the 3rd 2017 International Conference on Sustainable Development (ICSD 2017)

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Abstract. In this paper, the catalyst PTA@MIL-101-NH 2 -Cl with various 2, 5-dichloroterephthalic acid was synthesized. Based on this, the effect of the strong negative groups -Cl on the crystal structure, molecular structure and thermal stability of the catalyst was studied. It was found that the immobilization of -Cl did not affect the structure of the catalyst, and it can improve the thermal stability of the catalyst to a certain extent. The mechanism of -Cl as the cellulose adsorption center in the directional hydrolysis of cellulose were analyzed. The strong negative groups -Cl form hydrogen bonds with the hydroxyl of cellulose to selectively adsorb cellulose, weaken the molecular hydrogen bonds of cellulose molecules to reduce the difficulty of cellulose hydrolysis and improve its hydrolysis efficiency. The yield of glucose obtained by the hydrolysis of cellulose after grafting-Cl catalyst was 81% higher than that without -Cl.

show abstract

Host–guest synthesis and encapsulation of phosphotungstic acid in MIL-101 via “bottle around ship”: An effective catalyst for oxidative desulfurization

Cited by 146 publications

References 53 publications

Proton exchange nanohybrid membranes with high phosphotungstic acid loading within metal-organic frameworks for PEMFC applications

Proton exchange nanohybrid membranes with high phosphotungstic acid loading within metal-organic frameworks for PEMFC applications

Encapsulation of Keggin-type phosphotungstic acid into the mesopores of SBA-16 as a reusable heterogeneous catalyst for the epoxidation of olefins

Influence of Strong Electronegativity Groups -Cl as the Adsorption Center of PTA@MIL-101-NH²-Cl for the Selective Hydrolysis of Cellulose into Glucose

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