東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Selective Hydrodeoxygenation of Biom...

Chen, Tianqi.

Linked to FindBook

Google Book

Amazon

博客來

Selective Hydrodeoxygenation of Biomass-Derived Model Compounds over Bifunctional Catalysts.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Selective Hydrodeoxygenation of Biomass-Derived Model Compounds over Bifunctional Catalysts./
Author:	Chen, Tianqi.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	127 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-11, Section: B.
Contained By:	Dissertations Abstracts International82-11B.
Subject:	Chemical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28494074
ISBN:	9798738618659

Selective Hydrodeoxygenation of Biomass-Derived Model Compounds over Bifunctional Catalysts.
Chen, Tianqi.

Selective Hydrodeoxygenation of Biomass-Derived Model Compounds over Bifunctional Catalysts. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 127 p.

Source: Dissertations Abstracts International, Volume: 82-11, Section: B.

Thesis (Ph.D.)--University of Pennsylvania, 2021.

This item must not be sold to any third party vendors.

The negative social and environmental impacts from burning of fossil fuels motivated the development of renewable and sustainable sources for the production of electricity such as wind and solar. Lignocellulosic biomass has emerged as a promising feedstock for carbon-based fuels and chemicals and much research effort has recently been directed at developing efficient catalytic pathways for the upgrading of lignin-derived oxygenate into useful products. This dissertation aimed to study the viability of utilizing bifunctional catalysts consisting of a transition metal either supported on or modified by a reducible metal oxide to promote the direct C-O bond cleavage in aromatic oxygenates (m-cresol). Surface science techniques such as HREELS, XPS and TPD were used to provide insights into the reaction pathway and mechanism of this reaction. In all studies featured in this thesis, transition metals such as Pt and Ni, exhibit moderate selectivity to desired product, toluene. It was found that the strong interaction between aromatic rings and metal surfaces facilitates the ring hydrogenation which forms an intermediate pool. While metal catalysts promoted by WOx and NbOx are extremely active and selective for the direct deoxygenation reaction. The interaction at the metal-metal oxide interfaces helps keep the metal oxide partially reduced and provide the active bonding sites for the adsorption of hydroxyl groups. It was also found that the I-cresol tends to adsorb on oxygen vacancies while the aromatic rings are tilted away from the surface. This bonding configuration would promote the direct deoxygenation of hydroxyl group.

ISBN: 9798738618659Subjects--Topical Terms:

560457
Chemical engineering.
Subjects--Index Terms:

Bifunctional

Selective Hydrodeoxygenation of Biomass-Derived Model Compounds over Bifunctional Catalysts.
LDR:03000nmm a2200433 4500 001 2282079
005 20210927083535.5
008 220723s2021 ||||||||||||||||| ||eng d
020 $a 9798738618659
035 $a (MiAaPQ)AAI28494074
035 $a AAI28494074
040 $a MiAaPQ $c MiAaPQ
100 1 $a Chen, Tianqi. $3 3560820
245 1 0 $a Selective Hydrodeoxygenation of Biomass-Derived Model Compounds over Bifunctional Catalysts.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 127 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-11, Section: B.
500 $a Advisor: Vohs, John M.
502 $a Thesis (Ph.D.)--University of Pennsylvania, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The negative social and environmental impacts from burning of fossil fuels motivated the development of renewable and sustainable sources for the production of electricity such as wind and solar. Lignocellulosic biomass has emerged as a promising feedstock for carbon-based fuels and chemicals and much research effort has recently been directed at developing efficient catalytic pathways for the upgrading of lignin-derived oxygenate into useful products. This dissertation aimed to study the viability of utilizing bifunctional catalysts consisting of a transition metal either supported on or modified by a reducible metal oxide to promote the direct C-O bond cleavage in aromatic oxygenates (m-cresol). Surface science techniques such as HREELS, XPS and TPD were used to provide insights into the reaction pathway and mechanism of this reaction. In all studies featured in this thesis, transition metals such as Pt and Ni, exhibit moderate selectivity to desired product, toluene. It was found that the strong interaction between aromatic rings and metal surfaces facilitates the ring hydrogenation which forms an intermediate pool. While metal catalysts promoted by WOx and NbOx are extremely active and selective for the direct deoxygenation reaction. The interaction at the metal-metal oxide interfaces helps keep the metal oxide partially reduced and provide the active bonding sites for the adsorption of hydroxyl groups. It was also found that the I-cresol tends to adsorb on oxygen vacancies while the aromatic rings are tilted away from the surface. This bonding configuration would promote the direct deoxygenation of hydroxyl group.
590 $a School code: 0175.
650 4 $a Chemical engineering. $3 560457
650 4 $a Alternative energy. $3 3436775
650 4 $a Molecular chemistry. $3 1071612
653 $a Bifunctional
653 $a Biomass
653 $a Catalyst
653 $a Cresol
653 $a High resolution electron energy loss spectroscopy
653 $a Hydrodeoxygenation
653 $a Catalytic pathways
653 $a Transition metals
653 $a Toluene
653 $a Hydroxyl group adsorption
690 $a 0542
690 $a 0431
690 $a 0363
710 2 $a University of Pennsylvania. $b Chemical and Biomolecular Engineering. $3 2101616
773 0 $t Dissertations Abstracts International $g 82-11B.
790 $a 0175
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28494074