Hydrothermal deoxygenation of triglycerides over carbon-supported bimetallic PtRe catalysts without an external hydrogen source

Jin, Mingyu; Choi, Minkee

doi:10.1016/j.mcat.2019.110419

Cited by 20 publications

(11 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, some studies have focused on the deoxygenation of assorted feedstocks over a variety of carbonsupported catalysts. [38][39][40] It appears that the use of activated carbon (AC) could inhibit coke formation and simultaneously enhance the spent catalyst life. Abdulkareem-alsultan et al 28 reported the high stability of Ag 2 O 3 -La 2 O 3 /AC with consistent deoxygenation for six runs.…”

Section: Introductionmentioning

confidence: 99%

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

et al. 2020

View full text Add to dashboard Cite

show abstract

“…For these reasons, the present work aims at characterizing the products obtained in the pyrolysis of Amazonian cocoa pod husks combined with downstream catalytic upgrading of pyrolysis hot vapors using bare alumina (γ-Al 2 O 3 ), and Ni, Mo, and MoNi catalysts supported on it as well with a high content of Mo (7:1). This paper discloses the possibility to improve the liquids products without using external H 2 source, which has been recently reported . Both metal active phases have been widely used in different catalyst formulations for refinery hydrotreating processes focused on removing heteroatoms from the hydrocarbon pool of certain crude-oil cuts, showing adequate activity for hydrogenolysis reactions while displaying moderate activity in the undesired hydrogenation of aromatic compounds .…”

Section: Introductionmentioning

confidence: 85%

Exploring a Low-Cost Valorization Route for Amazonian Cocoa Pod Husks through Thermochemical and Catalytic Upgrading of Pyrolysis Vapors

Villasana,

Armenise,

Ábrego

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Ecuador as an international leader in the production of cocoa beans produced more than 300 000 tons in 2021; hence, the management and valorization of the 2 MM tons of waste generated annually by this industry have a strategic and socioeconomic value. Consequently, appropriate technologies to avoid environmental problems and promote sustainable development and the bioeconomy, especially considering that this is a megadiverse country, are of the utmost relevance. For this reason, we explored a low-cost pyrolysis route for valorizing cocoa pod husks from Ecuador's Amazonian region, aiming at producing pyrolysis liquids (bio-oil), biochar, and gas as an alternative chemical source from cocoa residues in the absence of hydrogen. Downstream catalytic processing of hot pyrolysis vapors using Mo-and/or Ni-based catalysts and standalone γ-Al 2 O 3 was applied for obtaining upgraded bio-oils in a laboratory-scale fixed bed reactor, at 500 °C in a N 2 atmosphere. As a result, bimetallic catalysts increased the bio-oil aqueous phase yield by 6.6%, at the expense of the organic phase due to cracking reactions according to nuclear magnetic resonance (NMR) and gas chromatography−mass spectrometry (GC−MS) results. Overall product yield remained constant, in comparison to pyrolysis without any downstream catalytic treatment (bio-oil ∼39.0−40.0 wt % and permanent gases 24.6−26.6 wt %). Ex situ reduced and passivated MoNi/γ-Al 2 O 3 led to the lowest organic phase and highest aqueous phase yields. The product distribution between the two liquid phases was also modified by the catalytic upgrading experiments carried out, according to heteronuclear single-quantum correlation (HSQC), total correlation spectroscopy (TOCSY), and NMR analyses. The detailed composition distribution reported here shows the chemical production potential of this residue and serves as a starting point for subsequent valorizing technologies and/or processes in the food and nonfood industry beneficiating society, environment, economy, and research.

show abstract

“…Similar result were also observed elsewhere. 11,[73][74][75][76][77][78][79][80] Apart from conversion, reaction temperature also determines the reaction pathway assigned by the selectivity of the products. Higher temperature favours decarboxylation/ decarbonylation since this condition allow C-C cleavage and carboxylic group release as CO 2 or CO.…”

Section: Influence Of Temperaturementioning

confidence: 99%

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

et al. 2023

View full text Add to dashboard Cite

show abstract

Hydrothermal deoxygenation of triglycerides over carbon-supported bimetallic PtRe catalysts without an external hydrogen source

Cited by 20 publications

References 50 publications

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

Exploring a Low-Cost Valorization Route for Amazonian Cocoa Pod Husks through Thermochemical and Catalytic Upgrading of Pyrolysis Vapors

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

Contact Info

Product

Resources

About