東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

A Continuous Electrochemical Process...

Naderinasrabadi, Mahtab.

FindBook

Google Book

Amazon

博客來

A Continuous Electrochemical Process to Convert Lignin to Low Molecular Weight Aromatic Compounds and Cogeneration of Hydrogen.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Continuous Electrochemical Process to Convert Lignin to Low Molecular Weight Aromatic Compounds and Cogeneration of Hydrogen./
作者:	Naderinasrabadi, Mahtab.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	152 p.
附註:	Source: Dissertations Abstracts International, Volume: 82-02, Section: B.
Contained By:	Dissertations Abstracts International82-02B.
標題:	Chemistry. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28107961
ISBN:	9798662545526

A Continuous Electrochemical Process to Convert Lignin to Low Molecular Weight Aromatic Compounds and Cogeneration of Hydrogen.
Naderinasrabadi, Mahtab.

A Continuous Electrochemical Process to Convert Lignin to Low Molecular Weight Aromatic Compounds and Cogeneration of Hydrogen. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 152 p.

Source: Dissertations Abstracts International, Volume: 82-02, Section: B.

Thesis (Ph.D.)--Ohio University, 2020.

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

Lignin is one of the main byproducts of pulp and paper industry and biorefineries. Depolymerization of lignin can lead to producing valuable low molecular weight compounds with different functional groups, which are mainly achieved from crude oil sources.Lignin electrolysis could address issues of other lignin depolymerization methods such as complexity, lignin combustion, and low selectivity. On the other hand, lignin electrolysis can occur at significantly lower overpotentials than those required for water electrolysis, which leads to lower-voltage electrolyzer operation and as a result lower energy consumption for hydrogen production.This study includes research and experimental works on developing a continuous electrochemical process for both lignin electrolysis and hydrogen production in an electrolyzer. At the first step of this project, high surface area TiO2 or carbon-supported NiCo electrocatalysts were synthesized and applied for lignin depolymerization at room temperature and pressure. The electrocatalysts were characterized by Brunauer-Emmett-Teller (BET), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy-dispersive X-ray spectroscopy (EDS) techniques. In addition, a three-electrode rotating disc electrode (RDE) system was used to test the performance and durability of 6 electrocatalysts individually and among them 1:3NiCo/TiO2 was selected as the most effective catalyst for lignin depolymerization.In the second step, a continuous electrochemical cell with 10 cm2 electrodes, separated by an anion exchange membrane (AEM), was applied for lignin electrolysis in the anode and hydrogen generation in the cathode. The effects of temperature, lignin concentration, cell voltage, and electrolysis time on hydrogen production, oxygen evolution, lignin conversion, products with different functional groups, and energy efficiency of the electrochemical reactor were investigated. Although applying high cell voltages increases the rate of electrochemical reactions and lignin conversion, it produces inefficiencies in energy consumption by enhancing oxygen evolution reaction (OER).Several techniques including gas chromatography-mass spectroscopy (GC/MS), ultraviolet-visible (UV-Vis) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, gel permeation chromatography (GPC), and Raman spectroscopy were applied to analyze the lignin samples. In addition, the generalized standard addition method (GSAM) for the first time was applied for measuring lignin conversion after electrolysis.The third step of this project included scaling-up the 10 cm2 continuous electrochemical cell to a 200 cm2 reactor and utilizing it for lignin electrolysis and H2 production on a larger scale. The results indicate that the performance of the scaled-up reactor is extremely analogous to the 10 cm2 cell.

ISBN: 9798662545526Subjects--Topical Terms:

516420
Chemistry.
Subjects--Index Terms:

Lignin electrolysis

A Continuous Electrochemical Process to Convert Lignin to Low Molecular Weight Aromatic Compounds and Cogeneration of Hydrogen.
LDR:04194nmm a2200421 4500 001 2275849
005 20210401103752.5
008 220723s2020 ||||||||||||||||| ||eng d
020 $a 9798662545526
035 $a (MiAaPQ)AAI28107961
035 $a (MiAaPQ)OhioLINKohiou1584622583669502
035 $a AAI28107961
040 $a MiAaPQ $c MiAaPQ
100 1 $a Naderinasrabadi, Mahtab. $3 3554094
245 1 0 $a A Continuous Electrochemical Process to Convert Lignin to Low Molecular Weight Aromatic Compounds and Cogeneration of Hydrogen.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 152 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-02, Section: B.
500 $a Advisor: Staser, John.
502 $a Thesis (Ph.D.)--Ohio University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Lignin is one of the main byproducts of pulp and paper industry and biorefineries. Depolymerization of lignin can lead to producing valuable low molecular weight compounds with different functional groups, which are mainly achieved from crude oil sources.Lignin electrolysis could address issues of other lignin depolymerization methods such as complexity, lignin combustion, and low selectivity. On the other hand, lignin electrolysis can occur at significantly lower overpotentials than those required for water electrolysis, which leads to lower-voltage electrolyzer operation and as a result lower energy consumption for hydrogen production.This study includes research and experimental works on developing a continuous electrochemical process for both lignin electrolysis and hydrogen production in an electrolyzer. At the first step of this project, high surface area TiO2 or carbon-supported NiCo electrocatalysts were synthesized and applied for lignin depolymerization at room temperature and pressure. The electrocatalysts were characterized by Brunauer-Emmett-Teller (BET), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy-dispersive X-ray spectroscopy (EDS) techniques. In addition, a three-electrode rotating disc electrode (RDE) system was used to test the performance and durability of 6 electrocatalysts individually and among them 1:3NiCo/TiO2 was selected as the most effective catalyst for lignin depolymerization.In the second step, a continuous electrochemical cell with 10 cm2 electrodes, separated by an anion exchange membrane (AEM), was applied for lignin electrolysis in the anode and hydrogen generation in the cathode. The effects of temperature, lignin concentration, cell voltage, and electrolysis time on hydrogen production, oxygen evolution, lignin conversion, products with different functional groups, and energy efficiency of the electrochemical reactor were investigated. Although applying high cell voltages increases the rate of electrochemical reactions and lignin conversion, it produces inefficiencies in energy consumption by enhancing oxygen evolution reaction (OER).Several techniques including gas chromatography-mass spectroscopy (GC/MS), ultraviolet-visible (UV-Vis) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, gel permeation chromatography (GPC), and Raman spectroscopy were applied to analyze the lignin samples. In addition, the generalized standard addition method (GSAM) for the first time was applied for measuring lignin conversion after electrolysis.The third step of this project included scaling-up the 10 cm2 continuous electrochemical cell to a 200 cm2 reactor and utilizing it for lignin electrolysis and H2 production on a larger scale. The results indicate that the performance of the scaled-up reactor is extremely analogous to the 10 cm2 cell.
590 $a School code: 0167.
650 4 $a Chemistry. $3 516420
650 4 $a Engineering. $3 586835
650 4 $a Wood sciences. $3 3168288
650 4 $a Chemical engineering. $3 560457
650 4 $a Environmental engineering. $3 548583
653 $a Lignin electrolysis
653 $a Hydrogen production
653 $a Oxygen evolution reaction
653 $a Lignin depolymerization
653 $a Lignin conversion
653 $a GSAM
690 $a 0485
690 $a 0775
690 $a 0542
690 $a 0537
690 $a 0746
710 2 $a Ohio University. $b Chemical Engineering (Engineering and Technology). $3 3179583
773 0 $t Dissertations Abstracts International $g 82-02B.
790 $a 0167
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28107961