Efficient conversion of cellulose to lactic acid over yttrium modified siliceous Beta zeolites

Ye, Juan; Chen, Chenyu; Zheng, Ying; Zhou, Dan; Liu, Yunzhen; Chen, Denglong; Ni, Liufang; Xu, Gang; Wang, Fanan

doi:10.1016/j.apcata.2021.118133

Cited by 22 publications

(5 citation statements)

References 42 publications

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“…It was found that yttrium-modified siliceou material β zeolite catalysts can effectively regulate the surface acidity of zeolite and inhib the yield of dehydration products such as HMF and other derivatives. The result indicated that when Lewis acidity was increased, the yield of LA from cellulose reache 49.2% within 30 min, more efficient than previous research studies [24]. It was noteworthy that the composition of some organic compounds may have side effects on the catalytic performance of the catalyst.…”

Section: Conversion Of Biomassmentioning

confidence: 71%

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

Zhang,

Fang,

Huang

et al. 2023

Catalysts

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Zeolites are porous materials with plentiful and adjustable pore structures, which are widely applied in various fields such as fossil fuel energy conversion, preparation of clean energy, chemical product conversion, CO2 capture, VOC treatment, and so on. Zeolites exhibited advantageous adsorption compared with traditional adsorbents such as activated carbon; in addition, they can also provide abundant reaction sites for various molecules. The chemical composition, structural acidity, and distribution of pore size can distinctly affect the efficiency of the reaction. The modification of zeolite structure, the development of novel and efficient preparation methods, as well as the improvement of reaction efficiency, have always been the focus of research for zeolites.

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Section: Conversion Of Biomassmentioning

confidence: 71%

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

Zhang,

Fang,

Huang

et al. 2023

Catalysts

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“…The 3d orbits of Y include Y 3d 5/2 of 159.1 eV and Y 3d 3/2 of 161.0 eV . The binding energy of Y 3d 5/2 (159.1 eV) over Cu/Y 1.0 -SSZ-39 is markedly higher than 155.9 eV of metal Y and 158.5 eV of Y 2 O 3 , indicating a strong interaction of Y 3+ with the framework oxygen atoms of the ion-exchanged sites, and the formation of Y–O–Si bonds. , …”

Section: Resultsmentioning

confidence: 96%

“…42 The binding energy of Y 3d 5/2 (159.1 eV) over Cu/Y 1.0 -SSZ-39 is markedly higher than 155.9 eV of metal Y and 158.5 eV of Y 2 O 3 , indicating a strong interaction of Y 3+ with the framework oxygen atoms of the ion-exchanged sites, and the formation of Y−O−Si bonds. 40,41 According to the above discussion on the amplified XRD profiles, DRIFT spectra, and binding energy of XPS, the interaction process between Y and the framework of Cu/SSZ-39 is summarized as follows. First, Y 3+ in the aqueous solution is complexed with H 2 O.…”

Section: Interaction Between Y and The Framework Of Cu/ Ssz-39mentioning

confidence: 99%

Highlights on Key Roles of Y on the Hydrothermal Stability at 900 °C of Cu/SSZ-39 for NH₃-SCR

Lin

Zhao

et al. 2022

ACS Catal.

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The continuously updated after-treatment system of diesel engines drives the selective catalytic reduction of ammonia (NH 3 -SCR) catalysts to withstand hydrothermal stability at higher temperatures (>800 °C). To meet the tightened emission of nitrogen oxides (NO x ), yttrium ions (Y 3+ ) were employed to improve the hydrothermal stability of the Cu/SSZ-39 catalyst at 900 °C. X-ray diffraction, solid nuclear magnetic resonance, H 2 temperature-programmed reduction, NH 3 temperature-programmed desorption, and in situ diffuse reflectance infrared Fourier transform spectra verified the key role of Y 3+ on the stability of the structure of SSZ-39 zeolite and the isolated copper species. In detail, the optimized structural stability at 900 °C of the Y-modified Cu/SSZ-39 catalyst is achieved as a result of the spatial and electronic effects of Y 3+ at ion-exchanged sites. Furthermore, Y 3+ ions in the cages of SSZ-39 zeolite induce more isolated copper species in the double six-member rings of SSZ-39 zeolite. The modified catalyst by 1 wt % Y (Cu/Y 1.0 -SSZ-39) shows the best deNO x performance after hydrothermal aging at 900 °C for 10 h, including higher than 70% NO x conversion at 200−550 °C and the maximum NO x conversion of 94% at 300 °C, which is remarkably higher than the maximum NO x conversion of 38% over Cu/SSZ-39 after same hydrothermal aging. This work provides a vital research strategy for fabricating the extraordinary hydrothermally stabilized Cu-based zeolite catalysts for NH 3 -SCR reaction, which would meet the "near-zero" emission after hydrothermal aging at 900 °C in the future.

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“…Due to the Lewis acidity originating from yttrium, glucose–fructose isomerization and the [3 + 3] retro-aldol reaction of fructose were effectively catalyzed. 12 However, there are few studies on the catalysis of glucose into GlycA.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Wells–Dawson phosphomolybdic heteropolyacid on the conversion of glucose into glycolic acid

et al. 2022

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Efficient conversion of cellulose to lactic acid over yttrium modified siliceous Beta zeolites

Cited by 22 publications

References 42 publications

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

Highlights on Key Roles of Y on the Hydrothermal Stability at 900 °C of Cu/SSZ-39 for NH₃-SCR

Effect of the Wells–Dawson phosphomolybdic heteropolyacid on the conversion of glucose into glycolic acid

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Efficient conversion of cellulose to lactic acid over yttrium modified siliceous Beta zeolites

Cited by 22 publications

References 42 publications

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

Highlights on Key Roles of Y on the Hydrothermal Stability at 900 °C of Cu/SSZ-39 for NH3-SCR

Effect of the Wells–Dawson phosphomolybdic heteropolyacid on the conversion of glucose into glycolic acid

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Highlights on Key Roles of Y on the Hydrothermal Stability at 900 °C of Cu/SSZ-39 for NH₃-SCR