Acidic Ultrafine Tungsten Oxide Molecular Wires for Cellulosic Biomass Conversion

Zhang, Zhenxin; Sadakane, Masahiro; Hiyoshi, Norihito; Yoshida, Akihiro; Hara, Michikazu; Ueda, Wataru

doi:10.1002/ange.201602770

Cited by 9 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated equal is similar with S CH 4 , S CO 2 , S CO , S C 2 H 4 , S CO , S C 2 H 6 (2) Weight hourly space velocity (WHSV)…”

Section: Catalytic Reforming (Cr) Experiments and Analysissupporting

confidence: 62%

“…As shown in Fig. 9(a), the addition of 0.1Ni-0.1Co/RHPC during the CR process of simulant bio-oil and gas resulted in high conversion and selectivity to H 2 , especially during the steam reforming (3), water gas shi (6), and water gas reactions (7). Meanwhile, methane reforming was also accelerated.…”

Section: Reaction Pathmentioning

confidence: 97%

“…1,2 Considerable research has been focused on new or alternative sustainable fuels and energy sources to reduce fossil fuel dependency and CO 2 emissions. Biomass energy is estimated to be between 50 and 1100 EJ per year in 2050, [3][4][5][6] while the total global energy consumption is estimated to be between 600 and 1000 EJ per year in the same year. 7 On the basis of these numbers, biomass appears to be capable of providing some of the energy in the future and thus can prevent fossil resource depletion.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The complete utilization of rice husk for production of synthesis gas

Jiang

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

Rice husk was completely used for synthesis gas production. The pyrolysis volatiles (gas and bio-oil) of rice husk were used as raw materials to produce synthesis gas and the bio-char from the rice husk pyrolysis was used as the catalyst for catalytic reforming of pyrolysis volatiles of rice husk. We investigated the role of catalysts in gas and bio-oil catalytic reformation under different reaction conditions and the interaction between gas and bio-oil. The results indicated that 0.1Ni-0.1Co/RHPC (rice husk pyrolysis carbon) exhibited favorable selectivity and high conversion for rice husk pyrolysis volatiles. In particular, H 2 and CO contents from bio-oil were 56% and 18%, respectively, 37% and 36% from gas, respectively.Moreover, the content of H 2 is 32%, while that of CO is 22% after catalytic reforming from the mixture of gas and bio-oil. The Co-Ni/RHPC catalysts were characterized by X-ray diffraction, FT-IR, NH 3 -TPD, H 2 -TPR and N 2 adsorption and desorption. BET results showed that adding Co and Ni can effectively enhance the BET surface from 4 m 2 g À1 to 96 m 2 g À1 . XRD results showed the active parts of the Ni and Co diffraction peaks remained evident after reaction.

show abstract

“…The calculated equal is similar with S CH 4 , S CO 2 , S CO , S C 2 H 4 , S CO , S C 2 H 6 (2) Weight hourly space velocity (WHSV)…”

Section: Catalytic Reforming (Cr) Experiments and Analysissupporting

confidence: 62%

Section: Reaction Pathmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The complete utilization of rice husk for production of synthesis gas

Jiang

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Prior to the conversion of chitin polymer, preliminary studies were performed on the chitin monomer NAG to testify to the feasibility and facilitate the protocol establishment. For catalyst selection, about 9 different catalysts including metal oxides and heteropoly acids (HPAs) that have been reported effective for biomass oxidations − were examined at 180 °C under 0.5 MPa O 2 in water (see Figure a). The NAG substrate could be readily converted without a catalyst, and organic acid products including AA, FA, and GA were detected in 15.6%, 5.2%, and 1.9% yield, respectively.…”

Section: Resultsmentioning

confidence: 99%

Base-Free, Vanadium-Catalyzed Conversion of Chitin into Acetic Acid under Low Oxygen Pressure

Chen

Zhong

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

The "shell biorefinery" has been proposed and developed rapidly in recent years, which valorizes the underestimated chitin biopolymer from oceanic waste to complement the lignocellulosic biomass for renewable chemicals. Herein, we exploited a simple and effective method to convert chitin biomass into acetic acid (AA) by using vanadium pentoxide (V 2 O 5 ) and oxygen gas (O 2 ) in base-free water, which makes the process more environmentally and economically favorable than previous methods. Under optimal conditions, the highest AA yield was obtained in 33.4% and 30.0% from the chitin monomer N-acetyl-Dglucosamine (NAG) and ball milled chitin (BM chitin) polymer. The V 2 O 5 catalyst has multifunctionally facilitated the hydrolysis, deacetylation, and subsequent oxidation into AA. FTIR and XRD analyses were conducted for the solid residues after the reaction. The FTIR spectra of the solid residues highly resembled that of chitin, inferring that chitin hydrolysis into NAG probably happened prior to deacetylation. Besides, XRD data demonstrated that the reaction system could effectively destruct the crystalline regions during the reaction. The study demonstrated a new catalytic approach for chitin biorefinery to renovate the shell waste into valuable chemicals.

show abstract

Synthesis of N‐Heterocycles via Oxidant‐Free Dehydrocyclization of Alcohols Using Heterogeneous Catalysts

Sun

Shan

et al. 2021

Angewandte Chemie

View full text Add to dashboard Cite

N‐Heterocycles, such as pyrroles, pyrimidines, quinazolines, and quinoxalines, are important building blocks for organic chemistry and the fine‐chemical industry. For their synthesis, catalytic borrowing hydrogen and acceptorless dehydrogenative coupling reactions of alcohols as sustainable reagents have received significant attention in recent years. To overcome the problems of product separation and catalyst reusability, several metal‐based heterogeneous catalysts have been reported to achieve these transformations with good yields and selectivity. In this Minireview, we summarize recent developments using both noble and non‐noble metal‐based heterogeneous catalysts to synthesize N‐heterocycles from alcohols and N‐nucleophiles via acceptorless dehydrogenation or borrowing hydrogen methodologies. Furthermore, this Minireview introduces strategies for the preparation and functionalization of the corresponding heterogeneous catalysts, discusses the reaction mechanisms and the roles of metal electronic states, and the influence of support Lewis acid–base properties on these reactions.

show abstract

Acidic Ultrafine Tungsten Oxide Molecular Wires for Cellulosic Biomass Conversion

Cited by 9 publications

References 32 publications

The complete utilization of rice husk for production of synthesis gas

The complete utilization of rice husk for production of synthesis gas

Base-Free, Vanadium-Catalyzed Conversion of Chitin into Acetic Acid under Low Oxygen Pressure

Synthesis of N‐Heterocycles via Oxidant‐Free Dehydrocyclization of Alcohols Using Heterogeneous Catalysts

Contact Info

Product

Resources

About