Liangwei Sun

China West Normal University

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Congming Tang

Chongqing University of Technology

Xinli Li

Henan University of Science and Technology

Zhanjie Zhai

China West Normal University

Wei Bai

Manchester Metropolitan University

Yu Zhang

Luoyang Normal University

Xinli Li

Institute of Engineering Thermophysics

Weixin Zou

State Key Laboratory of Pollution Control and Resource Reuse

Zhi Chen

Suzhou University of Science and Technology

Cong-Ming TANG

China West Normal University

Lin Dong

State Key Laboratory of Pollution Control and Resource Reuse

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Chinese Academy of Sciences

University of Chinese Academy of Sciences

Chongqing University of Technology

China West Normal University

Chongqing University

Sichuan University

Chengdu Organic Chemicals (China)

Institute of Engineering Thermophysics

State Key Laboratory of Pollution Control and Resource Reuse

Nanjing University

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Efficient Conversion of Bio‐Lactic Acid to 2,3‐Pentanedione on Cesium‐Doped Hydroxyapatite Catalysts with Balanced Acid–Base Sites

ChemCatChem (2017)

Xinli Li Liangwei Sun Weixin Zou Ping Cao Zhi Chen

Abstract We report the design and synthesis of cesium‐doped hydroxyapatite for direct and high‐yield conversion of biobased lactic acid to 2,3‐pentanedione (72.3 %). Cs species derived from CsNO 3 at high temperature of calcination is introduced into the hydroxyapatite structure to regulate its acid–base properties. It is found that a balance of acid–base chemistry favors the condensation of lactic acid to 2,3‐pentanedione. As a result, the undesired reactions such as lactic acid dehydration, decarbonylation, and coking are suppressed. Instead, a concerted catalysis between surface basic site and acidic site for lactic acid condensation to 2,3‐pentanedione dominates on the cesium‐doped hydroxyapatite catalyst, leading to a highly selective process for direct conversion of bio‐lactic acid to 2,3‐pentanedione.

Caesium

Base (topology)

10.1002/cctc.201701332

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Facile Preparation of Fe₃O₄from Fe₂O₃via Reduction of Mixed Vapors Containing Lactic Acid and Water: Catalytic Deoxygenation of Lactic Acid into Propionic Acid

ChemistrySelect (2016)

Yu Zhang Xinli Li Liangwei Sun Congming Tang

Abstract An efficient and simple method for reduction of Fe 2 O 3 into Fe 3 O 4 using the mixed vapors including lactic acid‐water has been developed. Various characterizations such as XRD, FT‐IR, XPS, TG, BET and SEM were used to investigate in the process of Fe 2 O 3 converted into Fe 3 O 4 . An interesting result was found: Fe 2 O 3 is easily reduced into Fe 3 O 4 , and it stays in the state of Fe 3 O 4 even if the time for its reduction further lengthened. The as‐prepared Fe 3 O 4 was used to catalyze deoxygenation of lactic acid into propionic acid. Reaction temperature, residence time and stability were also discussed. It was found that enhancing reaction temperature favors deoxygenation of lactic acid into propionic acid, and shortening residence time also favors the formation of propionic acid. Especially, it offered an excellent adaptability for fluctuation of lactic acid feed flow rate.

Deoxygenation

10.1002/slct.201601195

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Production of propionic acid via hydrodeoxygenation of lactic acid over Fe_xO_y catalysts

RSC Advances (2016)

Xinli Li Zhanjie Zhai Congming Tang Liangwei Sun Yu Zhang

Efficient synthesis of propionic acid from lactic acid using Fe_yO_x catalyst via hydrodeoxygenation has been achieved.

Hydrodeoxygenation

10.1039/c6ra10096a

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Citations (21)