Air‐Mediated Biomimetic Synthesis of Polyhydroxyalkanoate with C4 Diol DOI Open Access
Huilin Xie, Kai Zhong, Sijie Niu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Poly(4‐hydroxybutyrate) (P4HB) is a high‐performance, well‐recyclable, and biodegradable polyhydroxyalkanoate (PHA). However, conventional bioproduction of homopolymeric P4HB involves complex costly processes with C4 feedstocks, particularly 1,4‐butanediol (BDO), enzyme‐coenzyme systems in genetically engineered bacteria. An alternative extracellular chemical route utilizing aerial oxidation BDO offers cost energy benefits but struggle conversion efficiency. Inspired by efficient intracellular primary alcohols, we propose ruthenium‐phosphine synergistic catalytic system that mimics functionality. This effectively catalyzed the air‐mediated, solvent‐free to produce γ‐butyrolactone (γ‐BL) oligomeric P4HB, space‐time yield (10.37 g [γ‐BL unit] −1 catalyst h ) surpassing values (<5.5) previous approaches. The oligomer‐containing products were reversibly converted γ‐BL then (28.9 kDa) via ring‐opening polymerization, exceeding reported (<16 kDa). study provides potential for large‐scale synthesis high‐value PHAs from diverse non‐grain‐based diols, offering economic environmental advantages.

Language: Английский

Efficient and Stable Synthesis of Butyrolactone from Biomass Derived 1,4‐ButaneDiol Dehydrogenation over Cu Supported on MgAl2O4 with Textural Properties DOI

Manne Parusha Ramudu,

T. Jagadish,

K. Eshwari

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(7)

Published: Feb. 1, 2025

Abstract Copper based catalysts have gained significant attention due to the exceptional reactivity of Cu species in breaking OH and C─H bonds through oxidation, as well their cost‐effectiveness. Herein, a series Cu‐based MgAl 2 O 4 with high dispersed spinel oxide particles were synthesized by impregnation method tested for catalytic dehydrogenation 1,4‐Butanediol gamma butyrolactone. The 15 confirmed highest activity maximum stability among all catalysts. Under moderate reaction conditions, conversion 98% butyrolactone selectivity 99% achieved on XRD, H ‐TPR, TPD, BET, FT‐IR, N pulse characterization exposed that catalyst prepared could be ascribed smallest particle size, dispersion, proper surface acid‐base sites weak metal‐support interaction, leading performance.

Language: Английский

Citations

1
Revealing the reaction mechanism and kinetic properties for dimethyl maleate hydrogenation on the Cu-Cr catalysts combined DFT with kMC analysis DOI
Changdong Li, Minhua Zhang, Yingzhe Yu

et al.

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 575, P. 114914 - 114914

Published: Feb. 13, 2025

Language: Английский

Citations

0
Phase Transition Process and Mechanism of LaOF in N2: From theory to Experiment DOI

Xianmin Tan,

Juanyu Yang, Zheng Zhao

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Pt-Ni bimetallic alloy catalyst with strong metal support interactions for Bi-Reforming to produce syngas DOI
Yongyue Wang,

Bing Han,

Cai Zeng

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133310 - 133310

Published: April 1, 2025

Language: Английский

Citations

0
Oxide-oxide interactions on CeO2-decorated CuO catalyst for hydrogen production from methanol steam reforming DOI
Chenxu Guo, Miao Li, Wenming Guo

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

Citations

0
Novel photocatalytic textile floater made with Ce0.85Y0.1Mg0.05O2-δ for the high degradation of methylene blue and fomesafen (Flex) under solar light DOI Creative Commons
Tzipatly A. Esquivel‐Castro, José Manuel Díaz Moreno, K.P. Padmasree

et al.

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106711 - 106711

Published: May 1, 2025

Language: Английский

Citations

0
Superior stability of Ca-La co-doped Ni/BN catalyst for biogas reforming to methanol syngas DOI
Zuhao Li,

Zetao Huang,

Bing Han

et al.

Journal of the Energy Institute, Journal Year: 2025, Volume and Issue: unknown, P. 102154 - 102154

Published: May 1, 2025

Language: Английский

Citations

0
Synergistic Interplay of a Dual Active Site on a Mo2N@ZrO2 Heterostructure for a Low-Temperature Reverse Water–Gas Shift Reaction DOI

Yahui Yang,

Yidan Li, Zhenzhen Huang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

The construction of the active site is pivotal in design highly efficient catalysts for heterogeneous catalysis. Notably, synergy between two sites can substantially enhance catalytic efficiency. Nonetheless, fabricating high-density dual on catalyst surface remains a significant challenge. In this study, host-guest strategy was employed to construct Mo2N@ZrO2 heterostructure catalyst, featuring number nitrogen and oxygen vacancies. exhibited near-equilibrium conversion 100% CO selectivity reverse water-gas shift reaction at 350 °C. Density functional theory (DFT) calculations situ diffuse reflection infrared Fourier transform (DRIFT) spectroscopy characterization indicate that vacancies dissociate CO2 into CO, while Mo2N promotes H2 form NHx species by heterolytic dissociation. formation facilitates desorption inhibits further hydrogenation CO*. This synergistic effect significantly enhances performance. constructing offers valuable insights developing catalysts.

Language: Английский

Citations

0
Rubidium- and Copper-Doped CeO2 Nanorods for the Oxidative Coupling of Anilines DOI

Peiwen Ju,

Hui Zhong, Zhiguo He

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 3, 2024

The catalytic production of aromatic azo compounds by aniline's oxidative coupling process is significant in organic synthesis. However, the catalysts used this method generally exhibit low selectivity for desired products and need costly preparation methods. In study, first time, we proposed a species regulation strategy to synthesize Rb-doped Cu/CeO2 nanorod catalyst, which showed high conversion (98%) (95%) toward aniline azoxybenzene using H2O2 as oxidant. Aniline radical ion trapping experiments demonstrated that follows nitrosobenzene intermediate mechanism. Characterization studies revealed addition Rb not only enhances interaction between Cu CeO2 but also increases oxygen vacancy content. DFT calculations indicate Cu–Ce Rb–Ce interfaces are main active sites, offering excellent performance. reusability test five cycles shows good stability Rb–Cu/CeO2 catalyst. study provides promising Rb-promoted nanocatalysts with ultrahigh selectivity, expanding their applicability related reactions.

Language: Английский

Citations

1
Air‐Mediated Biomimetic Synthesis of Polyhydroxyalkanoate with C4 Diol DOI Open Access
Huilin Xie, Kai Zhong, Sijie Niu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Poly(4‐hydroxybutyrate) (P4HB) is a high‐performance, well‐recyclable, and biodegradable polyhydroxyalkanoate (PHA). However, conventional bioproduction of homopolymeric P4HB involves complex costly processes with C4 feedstocks, particularly 1,4‐butanediol (BDO), enzyme‐coenzyme systems in genetically engineered bacteria. An alternative extracellular chemical route utilizing aerial oxidation BDO offers cost energy benefits but struggle conversion efficiency. Inspired by efficient intracellular primary alcohols, we propose ruthenium‐phosphine synergistic catalytic system that mimics functionality. This effectively catalyzed the air‐mediated, solvent‐free to produce γ‐butyrolactone (γ‐BL) oligomeric P4HB, space‐time yield (10.37 g [γ‐BL unit] −1 catalyst h ) surpassing values (<5.5) previous approaches. The oligomer‐containing products were reversibly converted γ‐BL then (28.9 kDa) via ring‐opening polymerization, exceeding reported (<16 kDa). study provides potential for large‐scale synthesis high‐value PHAs from diverse non‐grain‐based diols, offering economic environmental advantages.

Language: Английский

Citations

0