Adsorption of 1-Butyl-3-Methylimidazolium Chloride Ionic Liquid by Functional Carbon Microspheres from Hydrothermal Carbonization of Cellulose

2013 ◽  
Vol 47 (6) ◽  
pp. 2792-2798 ◽  
Author(s):  
Xinhua Qi ◽  
Luyang Li ◽  
Tengfei Tan ◽  
Wenting Chen ◽  
Richard L. Smith
Keyword(s):  
Ionic Liquid ◽  
Hydrothermal Carbonization ◽  
Carbon Microspheres

Effect of L-Arginine on the Carbon Microsphere Forming under Hydrothermal Carbonization

2019 ◽  
Vol 41 (1) ◽  
pp. 72-72
Author(s):  
Jilei Liang Jilei Liang ◽  
Mengmeng Wu Mengmeng Wu ◽  
Hongmei Cai Hongmei Cai ◽  
Hao Wang Hao Wang ◽  
Hua Huang Hua Huang ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Adsorption Capacity ◽  
Surface Property ◽  
Condensation Reaction ◽  
Hydrothermal Carbonization ◽  
Carbon Microspheres ◽  
N2 Adsorption ◽  
Sem Images ◽  
Ft Ir ◽  
Adsorption Desorption

Carbon microspheres (CMs) with a diameter of 5-10 μm have been synthesized by hydrothermal carbonization of starch and L-arginine. The surface property and structure of CMs were examined by FT-IR spectra, N2 adsorption-desorption isotherms and SEM images. These characterizations indicated that the L-arginine does not connect into the CMs but it promotes the starch hydrolysis and polymerization-condensation reaction of intermediate, which accelerates the formation of CMs and improves the yield in shorter time. The surface property of CMs determines adsorption capacity for acetic acid. By contrast, the porosity resulted from the carbonization at 500 and#176;C dominates the adsorption capacity for acetic acid.

Preparation and Characterization of Carbon Microspheres From Waste Cotton Textiles By Hydrothermal Carbonization

2019 ◽  
Vol 7 (12) ◽  
pp. 1309-1319
Author(s):  
Yongfang Zhang ◽  
Wensheng Hou ◽  
Hong Guo ◽  
Sheng Shi ◽  
Jinming Dai
Keyword(s):  
Hydrothermal Carbonization ◽  
Carbon Microspheres ◽  
Cotton Textiles

Hydrothermal Solid Carrot Spheres

2018 ◽  
Vol 283 ◽  
pp. 16-22
Author(s):  
Bralee Chayasombat ◽  
Visittapong Yordsri ◽  
Vittaya Amornkitbamrung ◽  
Seksan Lowpa ◽  
Samuk Pimanpang ◽  
...  
Keyword(s):  
Hard Sphere ◽  
Hydrothermal Carbonization ◽  
Solid Carbon ◽  
Carrot Juice ◽  
Carbon Microspheres ◽  
X Ray Diffraction ◽  
X Ray ◽  
Graphitic Structure ◽  
Sphere Formation ◽  
Solid Spheres

In this study, hydrothermal carbonization of carrot juice was conducted at 180 °C for 6 hours, followed by annealing at 500 °C for 6 hours. In the absence of a catalyst, hydrothermal carbonization of carrot juice produced hollow and solid carbon microspheres (CMS) with diameters ranging from 0.3 to 4.0 µm. SEM and TEM images of the CMS showed various morphologies and sizes. X-ray diffraction and Raman spectroscopy indicated the CMS had a disordered graphitic structure. A HAADF micrograph showed that although the majority of the CMS in this study were hollow, there were also solid spheres which had not previously been reported for hydrothermal carbonization. STEM EDS mapping of a solid CMS indicated approximately 95 wt% of C with traces of N, O, Si, P, S, Cl and K. The effect of the starting precursors on the hard sphere formation mechanism is discussed.

scholarly journals Inside Cover: Improving Hydrothermal Carbonization by Using Poly(ionic liquid)s (Angew. Chem. Int. Ed. 23/2013)

2013 ◽  
Vol 52 (23) ◽  
pp. 5888-5888
Author(s):  
Pengfei Zhang ◽  
Jiayin Yuan ◽  
Tim-Patrick Fellinger ◽  
Markus Antonietti ◽  
Haoran Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Hydrothermal Carbonization ◽  
Poly Ionic Liquid

Effects of additives on sucrose-derived activated carbon microspheres synthesized by hydrothermal carbonization

2017 ◽  
Vol 52 (18) ◽  
pp. 10787-10799 ◽  
Author(s):  
Haiyang Zhao ◽  
Xiaoai Lu ◽  
Yue Wang ◽  
Bin Sun ◽  
Xianghao Wu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Hydrothermal Carbonization ◽  
Carbon Microspheres

Characteristics of Hydrochars Derived from Glucose, Protein, and Cellulose by Hydrothermal Carbonization Treatment

2021 ◽  
Vol 15 (1) ◽  
pp. 97-104
Author(s):  
Peiru Zhu ◽  
Jiayang Liu ◽  
Jun Ma ◽  
Lian Li ◽  
Xueying Zhang
Keyword(s):  
Residence Time ◽  
Raw Materials ◽  
Calorific Value ◽  
Hydrothermal Carbonization ◽  
Carbon Microspheres ◽  
Wet Biomass ◽  
Bio Oil ◽  
Higher Temperature ◽  
Absolute Advantage

With hydrothermal carbonization (HTC) treatment, wet biomass can be rapidly converted into hydrochar product with high-carbon content and calorific value. The current study employed glucose, protein, and cellulose as raw materials to investigate the effects of reaction temperature and residence time on characteristics of hydrochars. Results showed that the optimal reaction temperatures for glucose, protein, and cellulose were 240 °C, 190 °C and 220 °C, respectively. The optimal residence times were 4 h, 3 h and 4 h respectively, under which carbon microspheres with smooth surface and uniform particle size tended to form. The increased temperature promoted decomposition of bio-oil in the hydrothermal system and improved the quality of carbon microspheres, but much higher temperature deformed the surface of the carbon microspheres. Appropriate residence time ensured full growth of carbon microspheres but excessive residence time made the formed carbon microspheres to crosslink with each other, causing roughness to the surface. In addition, comparison of the specific surface area showed that the cellulose carbon microspheres exhibited an absolute advantage.

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