Junmeng Cai
Shanghai Jiao Tong University
Solid-stateWork (thermodynamics)Kinetic energyKineticsOrganic chemistryChemistryMaterials scienceScientific methodLignocellulosic biomassCelluloseBiomassCharIntegral methodKinetic analysisFrequency factorMathematicsPyrolysisChemical engineeringWaste managementThermogravimetric analysisActivation energyThermodynamics
95Publications
29H-index
2,423Citations
Publications 95
Newest
#1Laipeng Luo (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Zhiyi Zhang (SJTU: Shanghai Jiao Tong University)
Last. Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
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Abstract null null The determination of the kinetic triplet including the activation energy, frequency factor, and kinetic mechanism function is a key objective in kinetic analysis of solid-state reactions like lignocellulosic biomass pyrolysis. The master plots method is usually used to determine the kinetic mechanism function once the activation energies as a function of conversion are estimated from an isoconversional method. A critical study of the master plots method has been performed by a...
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#1Hongyu Zhu (Aston University)
#1Hongyu Zhu (Aston University)H-Index: 1
Last. Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
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Abstract null null Pyrolysis is a promising and attractive way to convert lignocellulosic biomass into low carbon-emission energy products. To effectively use biomass feedstock with size distribution to produce biofuels, a comprehensive kinetic model of the process, occurring at particle level, is important. In this study, the population balance model (PBM)-distributed activation energy model (DAEM) coupled model is first time developed to predict biomass pyrolysis. The Population balance model ...
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#1Meiyun Chai (SJTU: Shanghai Jiao Tong University)H-Index: 9
#2Li Xie (SJTU: Shanghai Jiao Tong University)H-Index: 1
Last. Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
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Abstract The kinetic and thermochemical models for poplar wood torrefaction were developed in the present work. The torrefaction kinetic model satisfactorily fitted the experimental thermogravimetric analysis (TGA) data of poplar wood torrefaction and provided a coherent description of the evolution of torrefaction volatile and solid products in terms of a set of identifiable chemical components and elemental compositions. The torrefaction thermochemical model described the thermochemical perfor...
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#1Chong Li (SJTU: Shanghai Jiao Tong University)H-Index: 4
#2Amirul Islam Rajib (ASU: Arizona State University)H-Index: 5
Last. Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
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#1Shuyu Zhou (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Yuan Xue (SJTU: Shanghai Jiao Tong University)H-Index: 28
Last. Zhongyue Zhou (SJTU: Shanghai Jiao Tong University)H-Index: 20
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Abstract Naturally occurring AAEMs in biomass exhibit detrimental effects to biomass pyrolysis as producing less oil with lower quality. Acid pretreatments are cheap and effective methods for mitigating AAEMs effect, thus improving the pyrolysis performance. In the current study, a combination of different experiment techniques and theoretical kinetic analysis was conducted to systematically compare the effects of both acid infusion and washing pretreatments. By utilizing Py-GC/MS system, the pr...
2 CitationsSource
#1Longlong Shan (NFU: Nanjing Forestry University)
#2Jun Yan (NFU: Nanjing Forestry University)
Last. Xingguang Zhang (USST: University of Shanghai for Science and Technology)H-Index: 3
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Acid-catalyzed aqueous-phase hydrolysis of cellulose was investigated over zeolite HY nanocrystals grafted on anantase titania nanofibres (HY-TiO2). H-exchanged NaY zeolite nanocrystals of controlled size (40–60 nm) were synthesized and deposited over TiO2 nanofibres prepared by hydrothermal treatment of anatase nanoparticles. The resulting materials were characterized by XRD, SEM, TEM, NH3-TPD and FT-IR, and evidenced a homogeneous distribution of HY nanocrystals across the TiO2 nanofibres. HY-...
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#1Chong Li (SJTU: Shanghai Jiao Tong University)H-Index: 4
#2Hanqi Duan (SJTU: Shanghai Jiao Tong University)H-Index: 2
Last. Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
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Abstract The exponential temperature change in nonisothermal kinetic analysis is usually used in the experimental investigation of biomass pyrolysis kinetics. In this paper, the applying of exponential temperature change for nonisothermal kinetics of thermally stimulated processes is discussed. Two approximations for the temperature integral occurring in the nonisothermal kinetics with the exponential temperature program are proposed. These approximations are more accurate in the evaluation of t...
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#1Youjun Zhang (NFU: Nanjing Forestry University)H-Index: 1
#2Guorun Huang (SJTU: Shanghai Jiao Tong University)
Last. Xingguang Zhang (USST: University of Shanghai for Science and Technology)H-Index: 3
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Abstract The physicochemical properties of dried distiller’s grains (DDGs) were measured and the pyrolysis kinetics analysis was experimentally investigated by the non-isothermal thermogravimetric analysis (TGA) at four heating rates of 10, 20, 30 and 40 K min-1. The results of proximate and elemental analysis showed that DDGs contained relatively high contents of volatile organic components (VOCs, 89.4 wt.%) and carbon (47.0 wt.%), and a higher value of heat content (20.4 MJ kg-1), compared wit...
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#1Xiaojuan Guo (DGUT: Dongguan University of Technology)H-Index: 3
#2Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
Last. Xi Yu (Aston University)H-Index: 11
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Abstract Non-isothermal thermogravimetric analysis (TGA) at four heating rates of 10, 20, 30 and 40 K min−1 under oxidative atmosphere was employed to investigate the characteristics of microalgae residue oxidative pyrolysis. The double distributed activation energy model (DAEM) was used to analyze the oxidative pyrolysis kinetics of microalgae residue and the simulated annealing method was employed for the estimation of the model parameters. The results showed that the double DAEM could describ...
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#1Nishu (SJTU: Shanghai Jiao Tong University)H-Index: 4
#2Ronghou Liu (SJTU: Shanghai Jiao Tong University)H-Index: 36
Last. Junmeng Cai (SJTU: Shanghai Jiao Tong University)H-Index: 29
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Abstract To investigate the pyrolysis behaviour of microcrystalline cellulose (MCC) and obtain a high yield of hydrocarbon, MCC was extracted from rice straw. The modification of ZSM-5 by different molar concentrations (0.2 M, 0.4 M and 0.6 M) of NaOH solution was carried out. At the same time, pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was performed without and with alkali-treated ZSM-5 maintaining biomass to catalyst ratio 0.25:1 at a fixed temperature of 500 °C. Results showed ...
1 CitationsSource