Improved stability of Pd/HZSM-5 bifunctional catalysts by the addition of promoters (CeO 2 , CaO) for the One-step synthesis of dimethyl ether from Sulfur-containing CO 2 hydrogenation

Chu, Ruizhi; Song, Chengcheng; Hou, Wenhua; Meng, Xiuxia; Miao, Zhenyong; Li, Xiao; Wu, Guoguang; Wan, Yongzhou; Bai, Lei

doi:10.1016/j.jtice.2017.09.032

Cited by 16 publications

(11 citation statements)

References 39 publications

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“…The thermos gravimetric analyzer (STA-449-F5, Germany) was used to determine the thermal stability of the gel. 36 The vertical combustion apparatus (S80508, Shanghai Pengyi Instrument Technology Co., LTD.) was used to determine the flame retardant of the gel.…”

Section: Characterization Of Pva Gel Materialsmentioning

confidence: 99%

Study on the mechanism and performance of polymer gels byTEandPVAchemical cross‐linking

Zhou

Chu

Fan

et al. 2021

J of Applied Polymer Sci

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Polymer gels are widely used as drilling plugging materials. In this paper, titanium bis(triethanolamine)diisopropoxide (TE) and polyvinyl alcohol (PVA) solution were chemically cross-linked to obtain a gel material. It shows that the OH on the PVA molecular chain are chemically cross-linked with the Ti ion in TE crosslinking agent through complexation reaction, and the crosslinked segment can inhibit the chain motion, resulting in a stable "crab structure" gel configuration. The gel materials synthesized under this configuration were characterized and analyzed by SEM, TG-DSC, GPC, and contact angle measurement. It was demonstrated that the gel performance is optimal when the concentration of TE crosslinking agent is 2.2 wt%, considering the gel strength and gelation time. In addition, the simulated plugging experiment of the gel showed that the service life of the gel was about 72 days, and the sealing performance and tensile recovery performance were significantly improved compared with the previous ones, which would provide a new perspective for the novel plugging materials.

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Section: Characterization Of Pva Gel Materialsmentioning

confidence: 99%

Study on the mechanism and performance of polymer gels byTEandPVAchemical cross‐linking

Zhou

Chu

Fan

et al. 2021

J of Applied Polymer Sci

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“…In addition, the combination of both noble and rare earth metals is another approach that is considered to enhance DME direct synthesis. Ruizhi et al [151] reported that bifunctional Pd/HZSM-5 catalyst could enhance its catalytic performance if CeO 2 -CaO promoters were added. The results indicated that the promoters improved the catalytic activity, avoided the coke deposition and increased the sulphur resistance and, therefore, upgraded thw catalyst's stability, thanks to the high acidity and the greater Pd dispersion.…”

Section: Zeolites Based Catalystsmentioning

confidence: 99%

Silica-Related Catalysts for CO2 Transformation into Methanol and Dimethyl Ether

et al. 2020

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The climate situation that the planet is experiencing, mainly due to the emission of greenhouse gases, poses great challenges to mitigate it. Since CO2 is the most abundant greenhouse gas, it is essential to reduce its emissions or, failing that, to use it to obtain chemicals of industrial interest. In recent years, much research have focused on the use of CO2 to obtain methanol, which is a raw material for the synthesis of several important chemicals, and dimethyl ether, which is advertised as the cleanest and highest efficiency diesel substitute fuel. Given that the bibliography on these catalytic reactions is already beginning to be extensive, and due to the great variety of catalysts studied by the different research groups, this review aims to expose the most important catalytic characteristics to take into account in the design of silica-based catalysts for the conversion of carbon dioxide to methanol and dimethyl ether.

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“…Pd/HZSM-5 bifunctional catalysts modified with CeO 2 and CaO promotors were applied for the synthesis of DME through sulfur-containing CO 2 hydrogenation. 184 The addition of CaO reduced the acidity and weakened the CO 2 adsorption of the catalyst, whereas the promotor CeO 2 could increase the acidity and the quantity of adsorbed CO 2 , thereby greatly improving the catalytic activity. Optimal amounts of the promotors were 3 wt% CeO 2 and 1 wt% CaO.…”

Section: Synthesis Of Dme/dmm From Comentioning

confidence: 99%

From ‘Gift’ to gift: producing organic solvents from CO₂

Chen

Zhang

et al. 2020

Green Chem.

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Improved stability of Pd/HZSM-5 bifunctional catalysts by the addition of promoters (CeO 2 , CaO) for the One-step synthesis of dimethyl ether from Sulfur-containing CO 2 hydrogenation

Cited by 16 publications

References 39 publications

Study on the mechanism and performance of polymer gels byTEandPVAchemical cross‐linking

Study on the mechanism and performance of polymer gels byTEandPVAchemical cross‐linking

Silica-Related Catalysts for CO2 Transformation into Methanol and Dimethyl Ether

From ‘Gift’ to gift: producing organic solvents from CO₂

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Improved stability of Pd/HZSM-5 bifunctional catalysts by the addition of promoters (CeO 2 , CaO) for the One-step synthesis of dimethyl ether from Sulfur-containing CO 2 hydrogenation

Cited by 16 publications

References 39 publications

Study on the mechanism and performance of polymer gels byTEandPVAchemical cross‐linking

Study on the mechanism and performance of polymer gels byTEandPVAchemical cross‐linking

Silica-Related Catalysts for CO2 Transformation into Methanol and Dimethyl Ether

From ‘Gift’ to gift: producing organic solvents from CO2

Contact Info

Product

Resources

About

From ‘Gift’ to gift: producing organic solvents from CO₂