Pt/Nb-WO x for the chemoselective hydrogenolysis of glycerol to 1,3-propanediol: Nb dopant pacifying the over-reduction of WO x supports

Yang, Man; Zhao, Xiaochen; Ren, Yujing; Wang, Jia; Lei, Nian; Wang, Aiqin; Zhang, Tao

doi:10.1016/s1872-2067(18)63074-8

Cited by 41 publications

(33 citation statements)

References 40 publications

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“…Herein, the in-situ generated Brønsted acid sites may associate with a large amount of W=O and WÀ OÀ Al bonds in WO x /α-Al 2 O 3 , which was converted to WÀ OH and WÀ (OH)À Al through hydrogen spillover owing to the strong interaction between Pt and WO x species. [43,57,58] We now provide direct evidence to reveal the insitu generation of Brønsted acid sites for the supported PtÀ WO x catalysts in the presence of H 2 , which might throw light on further understanding the glycerol hydrogenolysis mechanism over Pt and W-based catalysts.…”

Section: Acid Propertiesmentioning

confidence: 78%

Facilitating Pt−WO_x Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Zhao

Liu

et al. 2021

ChemCatChem

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Designing efficient catalysts for glycerol hydrogenolysis to 1,3‐propanediol (1,3‐PDO), which involves the selective cleavage of the secondary C−O bond, is a challenging task. Current Pt−WOx‐based catalysts often provide low atom efficiency of W and Pt toward 1,3‐PDO production due to undesired catalyst structures. Herein, we fabricate the highly‐dispersed substantially uniform WOx species on inert α‐Al2O3 support by simple high‐temperature heat‐treatment, and the amount of Pt−WOx interface active sites could be adjusted by Pt loading, showing an excellent catalytic performance in glycerol hydrogenolysis at high concentration of glycerol, especially the unprecedented W efficiency (76 g1,3‐PDOgW−1 h−1) toward 1,3‐PDO. The high catalytic efficiency is attributed to the strong interaction between the isolated WO4 species and platinum, which could in‐situ generate the Brønsted acid sites during the reaction as evidenced by IR analysis with NH3 adsorption.

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Section: Acid Propertiesmentioning

confidence: 78%

Facilitating Pt−WO_x Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Zhao

Liu

et al. 2021

ChemCatChem

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“…However, the separation problem of the homogeneous catalytic system has steered intensive development of heterogeneous catalysts for glycerol hydrogenolysis to 1,3-PDO (Table ). ,,,− …”

Section: Smart Drop-in Biobased 13-propanediolmentioning

confidence: 99%

“…The amount of Bronsted acid sites followed the order of Pt-LiSiW/ZrO 2 > Pt-CsSiW/ZrO 2 > Pt-HSiW/ZrO 2 > Pt-KSiW/ZrO 2 > Pt-RbSiW/ZrO 2 , which is in agreement with the catalytic performance of the catalysts. Yang et al 36 explored the idea of introducing Nb as a promoter for Pt/WO x . The promotional effect of Nb was credited to the formation of additional in situ Bronsted acid sites and hydrides as a result of Nb deposition.…”

Section: ■ Introductionmentioning

confidence: 99%

Palm Oil-Based Chemicals for Sustainable Development of Petrochemical Industries in Malaysia: Progress, Prospect, and Challenges

Chin

Shahruddin

Chua

et al. 2021

ACS Sustainable Chem. Eng.

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The Malaysia petrochemical industry has continued to grow due to its dominance in the global chemical market. The consequential adverse impact on environmental aspects and resource depletion have urged the petrochemical industries to commit to sustainability-driven initiatives such as substitution with renewables and natural processes using biobased feedstock. Nevertheless, many petrochemical industries shy way from investing in such a complex and capital-intensive production process. It is anticipated that capital cost and energy cost can be reduced significantly if the functional group of biobased feedstock matches well with the composition and energy content of the end product. This perspective reviews the technical aspects of the processes for converting vegetable oil-based raw materials into the respective biobased smart drop-in and dedicated chemicals, 1,3-propanediol (1,3-PDO) and lubricant, attributed to the notable market position of Malaysia petrochemical industries for these products. Vegetable oil-based glycerol is a potential bioderived feedstock for the synthesis of 1,3-PDO. Hitherto, the biotechnological conversion process has been commercialized even though its complexity and capital cost can be further reduced by using microbial consortia, which are highly adaptable to the less stringent continuous glycerol fermentation. The comparatively simple chemical conversion process is yet to be commercialized because of impractical catalyst selectivity and stability under severe operating conditions. On another note, vegetable oils have been proven as a promising feedstock for the production of biolubricants. Despite numerous research efforts, setbacks like process complexity and unrecyclable catalysts are still restricting an economically viable large-scale production of biolubricants from vegetable oil. Palm oil which is abundantly available in Malaysia could continue to be the feasible biobased feedstock for the production of 1,3-PDO and biolubricant, provided sustainable agronomic and manufacturing practices were developed for the cultivation of oil palm and production of palm oil, respectively. With an abundant supply of biobased feedstock, the petrochemical industries, with their market position for chemical products, and the palm oil and oleochemical industries should work hand in hand to green Malaysia's economy through the acceleration of the development of sustainable business in biobased chemicals. The mutually beneficial partnership could only be promoted by the realization of relevant government policies.

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“…In order to study the interaction between Pt and WOx without interference of a third oxide support, Wang and coworkers developed mesoporous WOx-supported Pt and Pt-Au bimetallic catalysts [18,19,[44][45][46][47]. The mesoporous WOx was featured with large surface area (126 m 2 /g) and abundant oxygen vacancies (x = 2.8), which favored the dispersion of Pt as pseudo-single atoms.…”

Section: Mesoporous Wox Supported Pt Catalystsmentioning

confidence: 99%

Selective hydrogenolysis of glycerol to 1,3-propanediol over Pt-W based catalysts

Wang

Yang

Wang

2020

Chinese Journal of Catalysis

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Pt/Nb-WO x for the chemoselective hydrogenolysis of glycerol to 1,3-propanediol: Nb dopant pacifying the over-reduction of WO x supports

Cited by 41 publications

References 40 publications

Facilitating Pt−WO_x Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Facilitating Pt−WO_x Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Palm Oil-Based Chemicals for Sustainable Development of Petrochemical Industries in Malaysia: Progress, Prospect, and Challenges

Selective hydrogenolysis of glycerol to 1,3-propanediol over Pt-W based catalysts

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Pt/Nb-WO x for the chemoselective hydrogenolysis of glycerol to 1,3-propanediol: Nb dopant pacifying the over-reduction of WO x supports

Cited by 41 publications

References 40 publications

Facilitating Pt−WOx Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Facilitating Pt−WOx Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Palm Oil-Based Chemicals for Sustainable Development of Petrochemical Industries in Malaysia: Progress, Prospect, and Challenges

Selective hydrogenolysis of glycerol to 1,3-propanediol over Pt-W based catalysts

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Facilitating Pt−WO_x Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol

Facilitating Pt−WO_x Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3‐Propanediol