Enhanced Catalytic Conversion of Camelina Oil to Hydrocarbon Fuels Over Ni-MCM-41 Catalysts

The ex-situ catalytic cracking of camelina oil using nickel loaded MCM-41 as catalyst at 450 °C in fixed bed reactor was studied. Results revealed that the yield, selectivity and chemical composition of the liquid products was improved by nickel loaded MCM-41 without affecting the crystalline structure of MCM-41. Moreover, the loaded nickel onto MCM-41 facilitated the cyclization, alkylation, aromatization, deoxygenation, isomerization and cracking reactions.

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Effect of H-ZSM-5 and Al-MCM-41 Proportions in Catalyst Mixtures on the Composition of Bio-Oil in Ex-Situ Catalytic Pyrolysis of Lignocellulose Biomass

Catalysts ◽

10.3390/catal10080868 ◽

2020 ◽

Vol 10 (8) ◽

pp. 868 ◽

Cited By ~ 1

Author(s):

Devy Kartika Ratnasari ◽

Anton Bijl ◽

Weihong Yang ◽

Pär Göran Jönsson

Keyword(s):

Catalytic Pyrolysis ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Ex Situ ◽

High Heating Value ◽

A Value ◽

Bio Oil ◽

Lignocellulose Biomass ◽

Mcm 41

The present work is an attempt to optimize the proportion of H-ZSM-5 and Al-MCM-41 in the catalyst mixtures for lignocellulose biomass catalytic pyrolysis. The H-ZSM-5 proportions of 50.0, 66.7, 75.0, and 87.5 wt.% were examined for the upgrading of biomass pyrolysis vapors in the fixed bed reactor. The catalyst mixture of 87.5 wt.% H-ZSM-5 and 12.5 wt.% Al-MCM-41 was found most effective in this study, giving a 65.75% deoxygenation degree. An organic-rich bio-oil was obtained with 74.90 wt.% of carbon content, 8 wt.% of hydrogen content, 15 wt.% oxygen content, a 0.39 wt.% water content, and a high heating value of 34.15 MJ/kg. The highest amount of desirable compounds among the studied catalytic experiments, which include hydrocarbons, phenols, furans, and alcohols, was obtained with a value of 95.89%. A significant improvement in the quality of bio-oil with the utilization of H-ZSM-5 and Al-MCM-41 catalyst mixtures was the rise of desirable compounds in bio-oil.

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Valuable Chemicals Derived from Pyrolysis Liquid Products of Spirulina platensis Residue

Indonesian Journal of Chemistry ◽

10.22146/ijc.38532 ◽

2019 ◽

Vol 19 (3) ◽

pp. 703 ◽

Cited By ~ 2

Author(s):

Siti Jamilatun ◽

Budhijanto Budhijanto ◽

Rochmadi Rochmadi ◽

Avido Yuliestyan ◽

Arief Budiman

Keyword(s):

Polyaromatic Hydrocarbons ◽

Food Additives ◽

Fixed Bed ◽

Liquid Product ◽

Fixed Bed Reactor ◽

Water Phase ◽

Gas Chromatography Mass Spectrometry ◽

Human Needs ◽

Liquid Products ◽

Interesting Alternative

With a motto of preserving nature, the use of renewable resources for the fulfillment of human needs has been seen echoing these days. In response, microalgae, a water-living microorganism, is perceived as an interesting alternative due to its easy-to-cultivate nature. One of the microalgae, which possess the potential for being the future source of energy, food, and health, is Spirulina plantesis. Aiming to identify valuable chemicals possibly derived from it, catalytic and non-catalytic pyrolysis process of the residue of S. plantesis microalgae has been firstly carried out in a fixed-bed reactor over the various temperature of 300, 400, 500, 550 and 600 °C. The resulting vapor was condensed so that the liquid product consisting of the top product (oil phase) and the bottom product (water phase) can be separated. The composition of each product was then analyzed by Gas Chromatography-Mass Spectrometry (GC-MS). In the oil phase yield, the increase of aliphatic and polyaromatic hydrocarbons (PAHs) and the decrease of the oxygenated have been observed along with the increase of pyrolysis temperature, which might be useful for fuel application. Interestingly, their water phase composition also presents some potential chemicals, able to be used as antioxidants, vitamins and food additives.

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Effect of Temperature on Plasma-Assisted Catalytic Cracking of Palm Oil into Biofuels

International Journal of Renewable Energy Development ◽

10.14710/ijred.9.1.107-112 ◽

2020 ◽

Vol 9 (1) ◽

pp. 107-112 ◽

Cited By ~ 2

Author(s):

I. Istadi ◽

Teguh Riyanto ◽

Luqman Buchori ◽

Didi Dwi Anggoro ◽

Roni Ade Saputra ◽

...

Keyword(s):

Palm Oil ◽

Catalytic Cracking ◽

Plasma Reactor ◽

Fixed Bed ◽

Liquid Product ◽

Fixed Bed Reactor ◽

Effect Of Temperature ◽

Catalytic Reactor ◽

Catalytic Role ◽

Reactor Temperature

Plasma-assisted catalytic cracking is an attractive method for producing biofuels from vegetable oil. This paper studied the effect of reactor temperature on the performance of plasma-assisted catalytic cracking of palm oil into biofuels. The cracking process was conducted in a Dielectric Barrier Discharge (DBD)-type plasma reactor with the presence of spent RFCC catalyst. The reactor temperature was varied at 400, 450, and 500 ºC. The liquid fuel product was analyzed using a gas chromatography-mass spectrometry (GC-MS) to determine the compositions. Result showed that the presenceof plasma and catalytic role can enhance the reactor performance so that the selectivity of the short-chain hydrocarbon produced increases. The selectivity of gasoline, kerosene, and diesel range fuels over the plasma-catalytic reactor were 16.43%, 52.74% and 21.25%, respectively, while the selectivity of gasoline, kerosene and diesel range fuels over a conventional fixed bed reactor was 12.07%, 39.07%, and 45.11%, respectively. The increasing reactor temperature led to enhanced catalytic role of cracking reaction,particularly directing the reaction to the shorter hydrocarbon range. The reactor temperature dependence on the liquid product components distribution over the plasma-catalytic reactor was also studied. The aromatic and oxygenated compounds increased with the reactor temperature.©2020. CBIORE-IJRED. All rights reserved

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Experimental and Computational Demonstration of a Low-Temperature Waste to By-Product Conversion of U.S. Oil Shale Semi-Coke to a Flue Gas Sorbent

Energies ◽

10.3390/en11113195 ◽

2018 ◽

Vol 11 (11) ◽

pp. 3195 ◽

Cited By ~ 2

Author(s):

Kathleen Dupre ◽

Emily Ryan ◽

Azat Suleimenov ◽

Jillian Goldfarb

Keyword(s):

Surface Area ◽

Flue Gas ◽

Oil Shale ◽

Gas Adsorption ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Ex Situ ◽

High Temperature Treatment ◽

Dynamics Modeling ◽

Gas Treatment

The volatility of crude oil prices incentivizes the use of domestic alternative fossil fuel sources such as oil shale. For ex situ oil shale retorting to be economically and environmentally viable, we must convert the copious amounts of semi-coke waste to an environmentally benign, useable by-product. Using acid and acid + base treatments, we increased the surface area of the semi-coke samples from 15 m2/g (pyrolyzed semi-coke) to upwards of 150 m2/g for hydrochloric acid washed semi-coke. This enhancement in porosity and surface area is accomplished without high temperature treatment, which lowers the overall energy required for such a conversion. XRD analysis confirms that chemical treatments removed the majority of dolomite while retaining other carbonate minerals and maintaining carbon contents of approximately 10%, which is greater than many fly ashes that are commonly used as sorbent materials. SO2 gas adsorption isotherm analysis determined that a double HCl treatment of semi-coke produces sorbents for flue gas treatment with higher SO2 capacities than commonly used fly ash adsorbents. Computational fluid dynamics modeling indicates that the sorbent material could be used in a fixed bed reactor to efficiently remove SO2 from the gas stream.

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Analysis of Gaseous and Liquid Products from Pressurized Pyrolysis of Flax Straw in a Fixed Bed Reactor

Industrial & Engineering Chemistry Research ◽

10.1021/ie902036v ◽

2010 ◽

Vol 49 (10) ◽

pp. 4627-4632 ◽

Cited By ~ 9

Author(s):

Mohammad Shahed Hasan Khan Tushar ◽

Nader Mahinpey ◽

Pulikesi Murugan ◽

Thilakavathi Mani

Keyword(s):

Fixed Bed ◽

Fixed Bed Reactor ◽

Liquid Products ◽

Flax Straw

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Effect of Hydrothermal Conditions on Isomerization Activity of Pt/SO42--ZrO2

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.132.183 ◽

2010 ◽

Vol 132 ◽

pp. 183-191

Author(s):

Juan Juan Zhang ◽

Yue Qin Song ◽

Xiao Long Zhou ◽

Cheng Lie Li ◽

Jin An Wang ◽

...

Keyword(s):

Sulfur Content ◽

Crystalline Structure ◽

Fixed Bed ◽

Strong Acid ◽

Acid Sites ◽

Zirconium Hydroxide ◽

Fixed Bed Reactor ◽

Isomerization Reaction ◽

Hydrothermal Conditions ◽

Hydrous Zirconia

Pt/SO42--ZrO2 catalysts (PSZ) were prepared by using a series of hydrous zirconia as support synthesized via a hydrothermal method. The catalytic performances of these catalysts were evaluated in the n-hexane isomerization in a fixed bed reactor. The crystalline structure, acidity, reduction properties, textural texture, and sulfur content were characterized by XRD, NH3-TPD, H2-TPR, N2 adsorption and thermal analysis. The experimental results indicated that the hydrothermal ageing of zirconium hydroxide led to great changes in the crystalline structure of hydrous zirconia support, sulfur content, and the acidity of PSZ. The abundant strong acid sites and high sulfur content were essential but insufficient to achieve a PSZ catalyst with high isomerization activity. Too weak or too strong interaction between sulfur species and zirconia in the catalysts was unfavorable to the isomerization reaction. The presence of considerable sulfate species interacting moderately with zirconia was crucial to high isomerization activity.

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Cu-Ni Nanocatalysts in Mesoporous MCM-41 and TiO2 to Produce Hydrogen for Fuel Cells via Steam Reforming Reactions

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1096.161 ◽

2015 ◽

Vol 1096 ◽

pp. 161-168 ◽

Cited By ~ 3

Author(s):

Richard Yeboah Abrokwah ◽

Vishwanath G. Deshmane ◽

Sri Lanka Owen ◽

Debasish Kuila

Keyword(s):

Surface Area ◽

Steam Reforming ◽

Anatase Phase ◽

High Surface ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Reaction Products ◽

One Pot ◽

Steam Reforming Of Methanol ◽

Mcm 41

We have synthesized mesoporous SiO2(MCM-41) and TiO2encapsulated bimetallic Cu-Ni nanocatalysts using an optimized one-pot hydrothermal procedure. The catalysts were characterized using BET, XRD, TGA-DSC and HRTEM techniques. While bimetallic Cu-Ni/MCM-41catalysts have high surface area- 634-1000 m2/g, Cu-Ni/TiO2yields surface area of 250-350 m2/g depending on the metal loading (5-10 wt%). The XRD studies confirmed a long range ordered structure in Cu-Ni/MCM-41 and the presence of the catalytically active anatase phase in the crystalline Cu-Ni/TiO2. The results from HRTEM studies were consistent with the mesoporosity of both supports. These catalysts were tested for methanol conversion and H2/CO selectivity via steam reforming of methanol (SRM) reactions in a fixed bed reactor. There is a distinct difference in the performance of these two supports. Bimetallic 3.33%Cu6.67%Ni/TiO2catalyst showed an impressive 99% H2selectivity at as low as 150°C and a maximum conversion of 92% at 250 °C but 3.33%Cu6.67%Ni/MCM-41 catalyst did not show any H2selectivity at 150°C and only ~12% conversion at 250°C. The effect of each support and relative metal loadings on the activity and selectivity of the SRM reaction products at different temperatures is discussed.

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