Influence of Ni catalyst support on the product distribution of cellulose fast pyrolysis vapors upgrading

2015 ◽  
Vol 113 ◽  
pp. 557-563 ◽  
Author(s):  
Jacek Grams ◽  
Michał Niewiadomski ◽  
Agnieszka M. Ruppert ◽  
Witold Kwapiński
Keyword(s):  
Catalyst Support ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Ni Catalyst

Effects of heating rate on fast pyrolysis behavior and product distribution of Jerusalem artichoke stalk by using TG-FTIR and Py-GC/MS

2019 ◽  
Vol 132 ◽  
pp. 486-496 ◽  
Author(s):  
Bo Wang ◽  
Fanfan Xu ◽  
Peijie Zong ◽  
Jinhong Zhang ◽  
Yuanyu Tian ◽  
...  
Keyword(s):  
Heating Rate ◽  
Fast Pyrolysis ◽  
Jerusalem Artichoke ◽  
Product Distribution ◽  
Pyrolysis Behavior

scholarly journals Synthesis of Mesoporous Carbon from Merbau Wood (Intsia spp.) by Microwave Method as Ni Catalyst Support for α-Cellulose Hydrocracking

2019 ◽  
Author(s):  
Andaru Dena Prasiwi ◽  
Wega Trisunaryanti ◽  
Triyono Triyono ◽  
Iip Izul Falah ◽  
Darma Santi ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Catalyst Support ◽  
Liquid Product ◽  
Total Pore Volume ◽  
Ni Catalyst ◽  
Microwave Method ◽  
Average Pore ◽  
Impregnation Technique

Synthesis of mesoporous carbon from Merbau wood (Intsia spp.) waste by microwave method as nickel catalyst support for α-cellulose hydrocracking had been carried out. The Merbau wood sawdust was carbonized at 800 °C to produce C800 and the C800 was treated by microwave irradiation (399 W) for 5 min to produce C800MW. The Merbau wood flakes, which were only treated by microwave irradiation (399 Watts) for 30 min produced CMW. Wet impregnation technique was carried out to disperse the Ni metal (1.0, 1.5, and 2.0 wt.%) onto the best mesoporous carbon. The mesoporous carbons were analyzed by Fourier Transform Infra-Red Spectroscopy (FTIR), Surface Area Analyzer (SAA) and Scanning Electron Microscopy (SEM). The hydrocracking of pyrolyzed α-cellulose was carried out at 400 °C. The liquid product was analyzed by Gas Chromatograph-Mass Spectrometer (GC-MS). The results showed that the C800MW was the best performance carbon and it had a specific surface area, total pore volume, average pore diameter and acidity of 364.12 m2/g, 0.28 cm3/g, 3.03 nm, and 2.18 mmol/g, respectively. The Ni1.5/C800MW catalyst produced the highest conversion of liquid product (58.76 wt.%) than the Ni1/C800MW (57.51 wt.%) and Ni2/C800MW (34.18 wt.%).

Product distribution from fast pyrolysis of glucose-based carbohydrates

2009 ◽  
Vol 86 (2) ◽  
pp. 323-330 ◽  
Author(s):  
Pushkaraj R. Patwardhan ◽  
Justinus A. Satrio ◽  
Robert C. Brown ◽  
Brent H. Shanks
Keyword(s):  
Fast Pyrolysis ◽  
Product Distribution

Simulation of the Agro-Biomass(Olive Kernel) Fast Pyrolysis in a Wire Mesh Reactor Considering Intra-Particle Radial and Temporal Distribution of Products

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Theodoros Damartzis ◽  
Margaritis Kostoglou ◽  
Anastasia Zabaniotou
Keyword(s):  
Particle Size ◽  
Heating Rate ◽  
Particle Temperature ◽  
Fast Pyrolysis ◽  
Temporal Distribution ◽  
Experimental System ◽  
Product Distribution ◽  
Wire Mesh ◽  
Particle Model ◽  
Transfer Model

In the present study, a model for the fast pyrolysis of a spherical biomass particle has been developed. The model admits the generation of data which are not accessible experimentally such as the intra-particle temperature and concentration distribution. Simulations have been carried using data from the reactor as well as from literature and the effects of the heating rate and the particle size have been examined. The kinetic model is coupled with a heat transfer model. The reaction kinetic constants have been chosen in order to match the theory to the data taken from experiments carried out in a laboratory wire mesh reactor, for a temperature range from 573 K to 873 K and a heating rate of 200 K/s. Pyrolysis temperature and product distribution profiles in both spatial and temporal directions throughout the particle are presented. The effects of the particle size and the reactor's heating rate in the final pyrolysis products and temperature are shown and discussed. Simulations were carried out using Matlab and the model has been validated against the experimental results. The heating rate, which is an important operating condition in thermal processes, seems to have a positive effect on the biomass conversion to gaseous and liquid products, an increase of the first resulting to an increase of the second. Particle size was found to have a negative effect on pyrolysis conversion as larger particles tend to give higher char yields. For the particular experimental system analyzed here, it seems that the radial non-uniformity is not very large and acceptable results can also be taken using a lumped particle model. Validation of the model with experimental data showed great accordance, thus the model could be used for the prediction of final pyrolysis yields and temperatures.

Naphthalene and Alkyl Naphthalene from Catalytic Fast Pyrolysis of Biomass Over ZSM-5 Aggregates

2020 ◽  
Vol 14 (2) ◽  
pp. 195-202 ◽  
Author(s):  
Fanjun Meng ◽  
Qiaoyan Shang ◽  
Dongliang Hua ◽  
Lei Chen ◽  
Laizhi Sun ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Gas ◽  
Pyrolysis Gas Chromatography ◽  
Organic Templates ◽  
Pyrolysis Of Biomass ◽  
Pyrolytic Product

Seed-induced synthesis of ZSM-5 aggregates was carried out without organic templates. The prepared ZSM-5 aggregates were used upgrading polar sawdust-derived pyrolytic vapors for the selective production of naphthalene and alkyl naphthalene. Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were conducted to analyze the pyrolytic product distribution and evaluate the catalyst performance. Due to the mesopores and proper acidities of ZSM-5 aggregates, the yield of naphthalene and methylnaphthalene over ZSM-5 aggregates were 36.0 and 123.7 mg/g, which were 2.7 and 2.6 times of those respectively over the commercial ZSM-5. The total selectivities of naphthalene and alkyl naphthalene could reach 61.56%.

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