Longlong Ma

ORCID: 0000-0002-1900-9721
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About
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Research Areas
  • Catalysis for Biomass Conversion
  • Catalysis and Hydrodesulfurization Studies
  • Biofuel production and bioconversion
  • Lignin and Wood Chemistry
  • Thermochemical Biomass Conversion Processes
  • Catalysts for Methane Reforming
  • Nanomaterials for catalytic reactions
  • Catalytic Processes in Materials Science
  • Supercapacitor Materials and Fabrication
  • Advanced Photocatalysis Techniques
  • Asymmetric Hydrogenation and Catalysis
  • Biodiesel Production and Applications
  • Mesoporous Materials and Catalysis
  • Ammonia Synthesis and Nitrogen Reduction
  • Enzyme Catalysis and Immobilization
  • Microbial Metabolic Engineering and Bioproduction
  • Enzyme-mediated dye degradation
  • Zeolite Catalysis and Synthesis
  • Catalysis and Oxidation Reactions
  • Advanced Cellulose Research Studies
  • Electrocatalysts for Energy Conversion
  • Covalent Organic Framework Applications
  • Forest Biomass Utilization and Management
  • Subcritical and Supercritical Water Processes
  • Chemical Synthesis and Reactions

Southeast University
2021-2025

Southeast University
2021-2025

University of Science and Technology of China
2016-2024

Guangzhou Institute of Energy Conversion
2014-2023

Chinese Academy of Sciences
2014-2023

Tianjin University
2014-2023

Changzhi University
2020-2023

University of Chinese Academy of Sciences
2008-2021

Dalian National Laboratory for Clean Energy
2020

China University of Geosciences
2015-2020

A high 5-hydroxymethylfurfural (HMF) yield of 53 mol% was obtained by direct degradation cellulose in a biphasic system with concentrated NaHSO4 and ZnSO4 as co-catalysts, 96% conversion 60 min. The concentration catalysts the aqueous solution volume ratio organic phase to were responsible for excellent performance. depolymerization is rate-determine step, formed glucose could be efficiently converted solution, leading low thus suppressing side reactions such humin char formation.

10.1039/c3gc40667a article EN Green Chemistry 2013-01-01

A series of sulfonic acid-functionalized carbon materials (C–SO3H), including poly(p-styrenesulfonic acid)-grafted nanotubes (CNT-PSSA), nanofibers (CNF-PSSA), benzenesulfonic acid-grafted CMK-5 (CMK-5-BSA), and (CNT-BSA), have been studied for fructose dehydration to 5-hydroxymethylfurfural (HMF) alcoholysis alkyl levulinate. study optimizing the reaction conditions such as catalyst loading, time, temperature has performed. Under optimal conditions, high HMF ethyl levulinate yields up 89%...

10.1039/c3gc41139g article EN Green Chemistry 2013-01-01

Pyrolysis is considered the most promising way to convert biomass fuels. Upgrading pyrolysis oil essential produce high quality hydrocarbon technologies have been developed for decades, and this review focuses on hydrodeoxygenation (HDO). In order declare need upgrading, properties of are firstly analyzed, potential analysis methods including some novel proposed. The oxygen content bio-oil leads its undesirable properties, such as chemical instability a strong tendency re-polymerize....

10.3390/catal7060169 article EN Catalysts 2017-06-01

A strategy for low-temperature synthesis of hydrotalcite-based nickel phosphide catalysts (Ni2P-Al2O3) with flower-like porous structures was proposed. The in situ reduction red phosphorus at 500 °C enables Ni2P small particle size and abundant active acidic sites, which facilitate the activation substrates H2. In hydrodeoxygenation guaiacol, a 100% conversion 94.5% yield cyclohexane were obtained over Ni2P-Al2O3 catalyst under 5 MPa H2 250 3 h. Other lignin-derived phenolic compounds could...

10.1021/acscatal.1c05495 article EN ACS Catalysis 2022-01-07

The formation of dark-colored solids, as known humins, was observed during acid-catalyzed dehydration certain biomass platform molecules like fructose, glucose and 5-hydroxymethylfurfural (HMF). Humins structures were found to be precipitated microspheres in the liquid phase and/or on surfaces solid catalyst reactor walls. begins with random uncontrollable condensation key intermediate molecules, namely, glucose, HMF, 1,2,4-Trihydroxybenzene (TB), 2,5-dioxo-6-hydroxyhexanal (DHH), etc....

10.1016/j.jaecs.2022.100062 article EN cc-by-nc-nd Applications in Energy and Combustion Science 2022-03-26

Lignocellulosic biomass is a renewable feedstock that has the potential to replace diminishing fossil fuels. Herein, we reported simultaneous conversion of cellulose, hemicellulose and lignin from raw into gasoline alkanes (hexanes pentanes) monophenols related hydrocarbons over layered LiTaMoO6 Ru/C in aqueous phosphoric acid medium. Specifically, were directly yielded carbohydrate components, based on total yield could be up 82.4%. Notably, fraction also transformed monophenols, alcohols...

10.1021/acssuschemeng.5b00256 article EN ACS Sustainable Chemistry & Engineering 2015-06-23

Catalytic hydrodeoxygenation (HDO) of vegetable oils to renewable alkane-type biofuels has attracted more and concern in recent years. However, the presently used catalysts were mainly focused on sulfided CoMo NiMo catalysts, which inevitably posed sulfur contamination final products. Therefore, exploring nonsulfured catalyst for this processing is fundamental importance, but it still an open challenge. In paper, we prepared free Ni supported SiO2, γ-Al2O3, SAPO-11, HZSM-5, HY by incipient...

10.1021/ef300063b article EN Energy & Fuels 2012-05-14
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