Hydrogenolysis of lignin to produce aromatic monomers over Fe Pd bimetallic catalyst supported on HZSM-5

Zeng, Zi; Xie, Jiaoyang; Guo, Yafei; Rao, R. Jagannadha; Chen, Bin; Cheng, Lihua; Xie, You; Ouyang, Xinping

doi:10.1016/j.fuproc.2020.106713

Cited by 29 publications

(10 citation statements)

References 44 publications

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“…The pore size distribution in Fig. 3(b) showed that the catalyst pore size was mainly distributed within 2 nm, while a small amount of mesopores existed between 2 and 4 nm, which might be due to the formation of catalyst accumulation, indicating that the catalyst was a typical microporous material, consistent with previous studies (Zeng et al 2021). In combination with Table 1, it can be seen that the specific surface area of the catalyst was remarkably reduced after supported nickel and chromium bimetals, especially the specific surface area of the micropores, indicating that most of the metal was supported on the surface of the catalyst micropores, and the pore volume was also reduced, indicating that a small amount of metal was distributed in the pores, further verifying the conclusion of XRD.…”

Section: Catalyst Characterizationsupporting

confidence: 89%

Efficient catalytic liquefaction of organosolv lignin over transition metal supported on HZSM-5

Yao

Liu

et al. 2022

BioRes

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In this work, the catalytic liquefaction of eucalyptus organosolv lignin (EOL) over hydrogen type-zeolite socony mobile-five (HZSM-5) zeolite supported transition metals in an ethanol system was studied, and a cheap transition metal NiCr/HZSM-5 catalyst was prepared. Among them, nickel and chromium proved to have a good synergistic effect, which could remarkably enhance the acidity of the catalyst surface, and the catalytic effect was better than Ru-based precious metal catalysts and commercial Raney Ni catalysts. Meanwhile, the optimal reaction process of NiCr/HZSM-5 and Raney Ni catalyst for synergistic catalysis of EOL was explored. Under the optimal process conditions, the lignin liquefaction rate reached 95.9%, the monophenol yield was 8.64%, and the char content was only 2.08%. Furthermore, 1H-13C heteronuclear single quantum correlation nuclear magnetic resonance (1H-13C HSQC NMR) showed that the β-O-4, β-β, and β-5 linkages of lignin were effectively broken. Thus, a higher liquefaction rate of lignin was realized, which provided the possibility for further comprehensive utilization of lignin.

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Section: Catalyst Characterizationsupporting

confidence: 89%

Efficient catalytic liquefaction of organosolv lignin over transition metal supported on HZSM-5

Yao

Liu

et al. 2022

BioRes

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“…Previous study also confirmed that the smaller particle size of catalyst can effectively improve the catalytic activity because the N-doped carbon carrier enhanced the electron interaction between the metal and the carrier. 40,41 In order to further understand the pore structure of typical catalysts, the specific surface area and pore structure of each sample were analyzed. N 2 isothermal adsorption−desorption curves and pore size distribution curves are demonstrated in Figure 8a,b, respectively, and pore structure parameters are calculated in Table 3.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Enhancing the Production of Phenolic Monomers from Reductive Catalytic Fractionation of Biomass over Catalyst of Ni–N-Doped Carbon

Wu,

Luo,

Yang

et al. 2024

ACS Sustainable Chem. Eng.

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Phenolic monomers and polysaccharides from the reductive catalytic fractionation of biomass are extremely important precursors for producing chemicals and liquid fuels instead of excessive consumption of fossil fuels. In this work, a novel Ni−Ndoped catalyst (Ni/C f ) prepared by the metal and bacterial residue carbon was employed for promoting the production of phenolic monomers. The several key parameters such as reaction temperature, pressure, time, gas types, catalyst types, and catalyst carriers were systematically optimized. The experimental results demonstrated that the lignin-derived phenolic monomer (LDPM) yield of 45.2 wt % and holocellulose retention rate of 96.0% were obtained by the birch RCF over Ni/C f accompanied by the optimal reaction conditions of 220 °C, 3 h, and 2 MPa H 2 . The LDPM yield of birch over Ni/C f was about 5.4 times and 3.1 times higher than that of Ni/C f-u and C f , respectively, and even better than Ni/AC, Ru/C, and Pd/C. The characterization analyses exhibited that the Ni−Ndoped catalyst contained large specific surface areas, small particle sizes, microporous structures, and medium acid sites while increasing the electron transfer and interaction among C−O−N−Ni. These key factors jointly realized the efficient depolymerization of lignin into phenolic monomers and high-retention holocellulose.

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“…In addition, due to the synergistic effect of bimetallic, the best selectivity is obtained in the production of dimer. Zeng et al 116 prepared highly dispersed iron palladium bimetallic catalyst by impregnation method. Under the optimal reaction conditions in ethanol water solvent, the hydrogenolysis conversion of lignin is as high as 98.2%, the yield of aromatic monomer is 27.9%, and the hydrogenolysis effect is good.…”

Section: Reductionmentioning

confidence: 99%

Review on the preparation of fuels and chemicals based on lignin

Ren

Jiang

et al. 2022

RSC Adv.

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Hydrogenolysis of lignin to produce aromatic monomers over Fe Pd bimetallic catalyst supported on HZSM-5

Cited by 29 publications

References 44 publications

Efficient catalytic liquefaction of organosolv lignin over transition metal supported on HZSM-5

Efficient catalytic liquefaction of organosolv lignin over transition metal supported on HZSM-5

Enhancing the Production of Phenolic Monomers from Reductive Catalytic Fractionation of Biomass over Catalyst of Ni–N-Doped Carbon

Review on the preparation of fuels and chemicals based on lignin

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