scholarly journals Valorisation of 2,5-dimethylfuran over zeolite catalysts studied by on-line FTIR-MS gas phase analysis

2021 ◽  
Author(s):  
Christopher Sauer ◽  
Anders Lorén ◽  
Andreas Schaefer ◽  
Per-Anders Carlsson
Keyword(s):  
Gas Phase ◽  
Phase Analysis ◽  
Fast Pyrolysis ◽  
Zeolite Beta ◽  
Zeolite Catalysts ◽  
Catalytic Fast Pyrolysis ◽  
On Line ◽  
Online Ftir

The valorisation of 2,5-dimethylfuran (2,5-dmf) by catalytic fast pyrolysis (CFP) has been studied by online FTIR-MS gas phase analysis. Zeolite beta, H-ZSM-5 and Cu-ZSM-5 were characterised and used as catalysts....

scholarly journals Conversion of Oil Palm Empty Fruit Bunch (EFB) Biomass to Bio-Oil and Jet Bio-Fuel by Catalytic Fast-Pyrolysis Process

2021 ◽  
Vol 14 ◽  
pp. 1-11
Author(s):  
Haryanti Yahaya ◽  
Rozzeta Dollah ◽  
Norsahika Mohd Basir ◽  
Rohit Karnik ◽  
Halimaton Hamdan
Keyword(s):  
Oil Palm ◽  
Zeolite Y ◽  
Fast Pyrolysis ◽  
Batch Process ◽  
Zeolite Catalysts ◽  
Catalyst Loading ◽  
Empty Fruit Bunch ◽  
Catalytic Fast Pyrolysis ◽  
Compound Distribution ◽  
Bio Oil

Oil palm empty fruit bunch (EFB) biomass is a potential source of renewable energy. Catalytic fast-pyrolysis batch process was initially performed to convert oil palm EFB into bio-oil, followed by its refinement to jet bio-fuel. Crystalline zeolites A and Y; synthesised from rice husk ash (RHA), were applied as heterogeneous catalysts. The catalytic conversion of oil palm EFB to bio-oil was conducted at a temperature range of 320-400°C with zeolite A catalyst loadings of 0.6 - 3.0 wt%. The zeolite catalysts were characterised by XRD, FTIR and FESEM. The bio-oil and jet bio-fuel products were analysed using GC-MS and FTIR. The batch fast-pyrolysis reaction was optimised at 400°C with a catalyst loading of 1.0 wt%, produced 42.7 wt% yields of liquid bio-oil, 35.4 wt% char and 21.9 wt% gaseous products. Analysis by GCMS indicates the compound distribution of the liquid bio-oil are as follows: hydrocarbons (23%), phenols (61%), carboxylic acids (0.7%), ketones (2.7%), FAME (7.7%) and alcohols (0.8%). Further refinement of the liquid bio-oil by catalytic hydrocracking over zeolite Y produced jet bio-fuel, which contains 63% hydrocarbon compounds (C8-C18) and 16% of phenolic compounds.

The role of shape selectivity in catalytic fast pyrolysis of lignin with zeolite catalysts

2012 ◽  
Vol 447-448 ◽  
pp. 115-123 ◽  
Author(s):  
Yanqing Yu ◽  
Xiangyu Li ◽  
Lu Su ◽  
Ying Zhang ◽  
Yujue Wang ◽  
...  
Keyword(s):  
Fast Pyrolysis ◽  
Shape Selectivity ◽  
Zeolite Catalysts ◽  
Catalytic Fast Pyrolysis

scholarly journals Biomass Pyrolysis Technology by Catalytic Fast Pyrolysis, Catalytic Co-Pyrolysis and Microwave-Assisted Pyrolysis: A Review

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 742
Author(s):  
Junjian Liu ◽  
Qidong Hou ◽  
Meiting Ju ◽  
Peng Ji ◽  
Qingmei Sun ◽  
...  
Keyword(s):  
New Technologies ◽  
Catalytic Mechanism ◽  
Fast Pyrolysis ◽  
Value Added ◽  
Vital Role ◽  
Zeolite Catalysts ◽  
Biomass Pyrolysis ◽  
Pyrolysis Products ◽  
Catalytic Fast Pyrolysis ◽  
Microwave Assisted

With the aggravation of the energy crisis and environmental problems, biomass resource, as a renewable carbon resource, has received great attention. Catalytic fast pyrolysis (CFP) is a promising technology, which can convert solid biomass into high value liquid fuel, bio-char and syngas. Catalyst plays a vital role in the rapid pyrolysis, which can increase the yield and selectivity of aromatics and other products in bio-oil. In this paper, the traditional zeolite catalysts and metal modified zeolite catalysts used in CFP are summarized. The influence of the catalysts on the yield and selectivity of the product obtained from pyrolysis was discussed. The deactivation and regeneration of the catalyst were discussed. Catalytic co-pyrolysis (CCP) and microwave-assisted pyrolysis (MAP) are new technologies developed in traditional pyrolysis technology. CCP improves the problem of hydrogen deficiency in the biomass pyrolysis process and raises the yield and character of pyrolysis products, through the co-feeding of biomass and hydrogen-rich substances. The pyrolysis reactions of biomass and polymers (plastics and waste tires) in CCP were reviewed to obtain the influence of co-pyrolysis on composition and selectivity of pyrolysis products. The catalytic mechanism of the catalyst in CCP and the reaction path of the product are described, which is very important to improve the understanding of co-pyrolysis technology. In addition, the effects of biomass pretreatment, microwave adsorbent, catalyst and other reaction conditions on the pyrolysis products of MAP were reviewed, and the application of MAP in the preparation of high value-added biofuels, activated carbon and syngas was introduced.

scholarly journals Novel Micro-Mesoporous Composite ZSM-5 Catalyst for Aromatics Production by Catalytic Fast Pyrolysis of Lignin Residues

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 378 ◽  
Author(s):  
Wenbo Wang ◽  
Zhongyang Luo ◽  
Simin Li ◽  
Shuang Xue ◽  
Haoran Sun
Keyword(s):  
Aromatic Hydrocarbons ◽  
Fast Pyrolysis ◽  
Catalytic Performance ◽  
Zeolite Catalysts ◽  
Mesoporous Composite ◽  
High Oxygen Content ◽  
Catalytic Fast Pyrolysis ◽  
Industrial Utilization ◽  
Polycyclic Aromatic ◽  
Pyrolytic Lignin

The industrial utilization of lignocellulosic biomass is often accompanied by lots of lignin residues. Catalytic fast pyrolysis (CFP) is a high-throughput method to convert lignin to aromatics and phenolics. In order to optimize catalytic performance, conventional zeolite catalysts often need to have mesostructural modification. Here, based on hierarchical zeolite (HZ), a novel micro-mesoporous composite zeolite was obtained by redeposition under mild conditions. The conversion of two industrial lignin residues, Kraft Lignin (KL) and Pyrolytic Lignin (PL), was investigated. Interestingly, the hierarchical sample was more suitable for the case of higher concentration of primary pyrolysis products such as CFP of PL, with aromatics yield of 12.7 wt % and a monocyclic aromatic hydrocarbons (MAHs) to polycyclic aromatic hydrocarbons (PAHs) mass ratio of 4.86. The mesoporous composite zeolite possessed a better PAHs suppression capability as M/P reached 6.06, and was suitable for low reactants’ concentration and high oxygen content, such as KL CFP, with a higher aromatics yield of 3.3 wt % and M/P of 5.12. These results were compared with poplar sawdust as actual biomass, and mesoporous samples were both highly efficient catalysts with MAHs yield over 10 wt % and M/P around 5.

On-Line Mass Spectrometric Methods for the Determination of the Primary Products of Fast Pyrolysis of Carbohydrates and for Their Gas-Phase Manipulation

2013 ◽  
Vol 85 (22) ◽  
pp. 10927-10934 ◽  
Author(s):  
Matthew R. Hurt ◽  
John C. Degenstein ◽  
Piotr Gawecki ◽  
David J. Borton II ◽  
Nelson R. Vinueza ◽  
...  
Keyword(s):  
Gas Phase ◽  
Fast Pyrolysis ◽  
Mass Spectrometric ◽  
Primary Products ◽  
Line Mass ◽  
On Line ◽  
Phase Manipulation

Zeolite catalysts screening for production of phenolic bio-oils with high contents of monomeric aromatics/phenolics from hydrolysis lignin via catalytic fast pyrolysis

2018 ◽  
Vol 178 ◽  
pp. 362-370 ◽  
Author(s):  
Hooman Paysepar ◽  
Kasanneni Tirumala Venkateswara Rao ◽  
Zhongshun Yuan ◽  
Laleh Nazari ◽  
Hengfu Shui ◽  
...  
Keyword(s):  
Fast Pyrolysis ◽  
Zeolite Catalysts ◽  
Hydrolysis Lignin ◽  
Catalytic Fast Pyrolysis
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