Pyrolysis of Chlorella vulgaris with HZSM-5 catalyst in a fixed bed reactor resulted in 57.2 wt% of bio-oil containing 25.8 wt% of aromatic carbon . The use of amphoteric oxides like ZrO 2 and .
2019-12-12 · The conversion of furan (a model of cellulosic biomass) over HZSM-5 was investigated in a thermogravimetric analysis–mass spectrometry system, in situ Fourier transform infrared analysis, and in a continuous-flow fixed-bed reactor. Furan adsorbed as oligomers at room temperature with a 1.73 of adsorbed furan/Al ratio. These oligomers were polycyclic aromatic compounds that were converted to .
Performance test was conducted in a fixed bed reactor at 540 °C, one atmosphere. GHSV of 1200 mL/g-h. Co-impregnation of Zn with Fe improved the catalytic activity and aromatic yield for 10 h time on stream as compared to parent HZSM-5 and Zn/ZSM-5 of .
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst Energies 2016. Pengarang lain. Lihat penerbitan.
This study presents in-situ upgrading of pyrolysis vapour derived from Napier grass over microporous and mesoporous ZSM-5 catalysts. It evaluates effect of process variables such catalyst–biomass ratio and catalyst type in a vertical fixed bed pyrolysis system at 600 °C, 50 °C/min under 5 L/min nitrogen flow. Increasing catalyst–biomass ratio during the catalytic process with microporous .
Downloadable (with restrictions)! Catalytic fast pyrolysis over HZSM-5 of red pepper stems, a representative agricultural residue material in the southern area of South Korea, was carried out. The SiO2/Al2O3 ratio of the catalyst were 23 and 280. Pyrolysis-gas chromatography/mass spectrometry was used to pyrolyze the pepper stem samples at 550 °C and directly analyze the product distribution.
Catalytic intermediate pyrolysis of napier grass in a fixed bed reactor with ZSM-5, HZSM-5 and zinc-exchanged zeolite-A as the catalyst IY Mohammed, FK Kazi, S Yusup, PA Alaba, YM Sani, YA Abakr Energies 9 (4), 246, 2016
2018-8-31 · Overview of Applications of Biomass Fast Pyrolysis Oil
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst Article (PDF Available) in Energies 9(4):246 · March 2016 .
2017-12-8 · Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst" Energies 9 (4), 246. DOI: 10.3390/en9040246 8. Isah Yakub Mohammed, Yousif Abdalla Abakr, Feroz Kabir, Suzana Yusup (2015) "Effect of Aqueous Pretreatment on Pyrolysis Characteristics of Napier
Isah Mohammed, Feroz Kazi, Suzana Yusup, Peter Alaba, Yahaya Sani and Yousif Abakr, Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst, Energies, 9, 12, (246), (2016).
A bio-oil production process involving torrefaction pretreatment, catalytic esterification, pyrolysis, and secondary catalytic processing significantly reduces yields of reactor char, catalyst coke, and catalyst tar relative to the best-case conditions using non-torrefied feedstock. The reduction in coke as a result of torrefaction was 28.5% relative to the respective control for slow .
2019-5-25 · The catalytic transformation over a HZSM-5 zeolite of key components of the liquid product obtained by the flash pyrolysis of biomass, namely, acetaldehyde, ketones (acetone and butanone), and acetic acid, has been studied, and great differences in reactivity and degradation to coke have been found. Acetaldehyde has a low reactivity to hydrocarbons, with a noticeable deactivation caused by .
The stripped catalyst is then contacted with air in an upwards transport bed, being regenerated and brought back to the catalyst hopper. 187 Operating parameters were claimed as 540–650 °C reactor temperature, 5–15 catalyst to oil ratio, steam to hydrocarbon ratio 0.2–0.4, residence time in reactor .
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst Energies March 21, 2016 The environmental impact from the use of fossil fuel cum depletion of the known fossil oil reserves has led to increasing interest in liquid biofuels made from renewable biomass.
Development of alternate energy sources is needed to fulfil the global energy demands that have been steadily increasing over time. Biomass provides a solution due to its abundant availability, high energy content, and multi-faceted usage. Pyrolyzing biomass produces syngas, bio-oil, and char with their ratio of formation depending on temperature, residence time, and, heating rate. Conducting .
2019-11-21 · A continuous-flow, fixed-bed reactor was utilized for the catalytic cracking of the heavy oil. Reactions were conducted under temperature conditions ranging from 300 to 600°C, at a catalyst weight W of about 1.0 x 10-3 kg and a feed oil mass flow rate F of about 1.0 x 10-3 kg h-1.
This study presents the first experimental report on the catalytic pyrolysis of Napier grass, an underutilized biomass source, using ZSM-5, 0.3HZSM-5 and zinc exchanged zeolite-A catalyst. Pyrolysis was conducted in fixed bed reactor at 600 °C, 30 °C/min and 7 L/min nitrogen flow rate.
2016-8-15 · The combined system includes an auger reactor and a downstream fixed-bed reactor. • USY and HZSM-5 (Si/Al = 25, 38) was evaluated for catalytic upgrading. • Strong acidity of porous zeolite was essential for catalytic deoxygenation. • Increase of bio-oil quality was at .
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst by Isah Yakub Mohammed 1,6, Feroz Kabir Kazi 2, Suzana Yusup 3, Peter Adeniyi Alaba 5, Yahaya Muhammad Sani 5 and Yousif Abdalla Abakr 4,*
Lignin is the most difficult to be converted and most easy coking component in biomass catalytic pyrolysis to high-value liquid fuels and chemicals. Catalytic conversion of guaiacol as a lignin .
2020-7-16 · Counteracting Rapid Catalyst Deactivation by Concomitant Temperature Increase during Catalytic Upgrading of Biomass Pyrolysis Vapors Using Solid Acid Catalysts Andreas Eschenbacher Technical University of Denmark Alireza Saraeian Iowa State University, [email protected] Brent H. Shanks Iowa State University, [email protected]
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst. Energies, 9 (4), p. 246. MOHAMMED, Isah, ABAKR, Yousif, KABIR, Feroz and YUSUP, Suzana (2015). Effect of aqueous pretreatment on pyrolysis .
Abstract A mixture of post-commercial polyolefin waste (PE/PP/PS) was pyrolyzed over various micro- and mesoporous catalysts using a fluidized-bed reactor operating isothermally at ambient pressure. The yield of volatile hydrocarbons with zeolitic nano-catalysts (n-ZSM-5 > n-MOR > n-USY) were higher than with non-zeolitic catalysts (MCM-41 > ASA). MCM-41 with large mesopores and ASA with .
First published on 28th August 2014. The hydrodeoxygenation (HDO) of 1-octanol as a model aliphatic alcohol of bio-oil was investigated in a continuous down-flow fixed-bed reactor over γ-Al 2 O 3, SiO 2, and HZSM-5 supported nickel catalysts in the temperature range of 488–533 K.The supported nickel catalysts were prepared by incipient wetness impregnation method and characterized by BET .
2018-9-1 · The main objective of the present work is to investigate the influence of nickel to cerium ratio on Hydrogen exchanged Zeolite Socony Mobil-5 (HZSM-5) towards the catalytic upgrading of sugarcane bagasse derived oxygenated pyrolysis vapours into C 6 – C 8 hydrocarbons in pyrolysis oil via in-situ fixed bed reactor. The pyrolysis reaction temperature and catalyst to biomass mass ratio were .
The acylation of 2-MF with acetic acid occurs over the same HZSM-5 catalyst at temperatures ranging from 220° to 300°C in an atmospheric pressure fixed-bed flow reactor. This reaction is exclusively selective to acetyl MF isomers over a broad range of temperatures. Conversions, selectivity, and yields for all the reactions are given in Fig .
1.1. Zeolite ZSM-5. The zeolite ZSM-5 is a synthetic 10-ring zeolite and the formula for describing the composition is . The ZSM-5 belongs to the group of pentasils, which can reach a Si/Al ratio of 10 to infinity. The high silicon content results in high thermal stability, hydrophobicity, and strength, but it leads to fewer active sites [18–20].
Fixed bed reactor testing with on‐line operando UV/Vis spectroscopy. Catalytic activity measurements were carried out in a quartz fixed‐bed reactor. Large zeolite ZSM‐5 crystals (25 mg) were loaded and activated at 550 °C under oxygen for 1 h and then cooled until the .
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst Energies March 29, 2016. Other authors. See publication. 5. Synthesis and application of hierarchical mesoporous HZSM-5 for biodiesel production from shea butter