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

FindBook

Google Book

Amazon

博客來

Theoretical Approaches Towards Selective Electrochemical Nitrogen Reduction.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Theoretical Approaches Towards Selective Electrochemical Nitrogen Reduction./
作者:	Statt, Michael J.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	180 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-07, Section: B.
Contained By:	Dissertations Abstracts International83-07B.
標題:	Electrolytes. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28688367
ISBN:	9798544204145

Theoretical Approaches Towards Selective Electrochemical Nitrogen Reduction.
Statt, Michael J.

Theoretical Approaches Towards Selective Electrochemical Nitrogen Reduction. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 180 p.

Source: Dissertations Abstracts International, Volume: 83-07, Section: B.

Thesis (Ph.D.)--Stanford University, 2021.

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

Anthropogenic climate change poses an extraordinary risk to all aspects of life on the planet in the coming decades. There is an urgent need to diminish the world's reliance on fossil fuels. However, transitioning industrial chemical processes to renewable energy inputs presents a unique challenge to net-zero emission targets. Many processes struggle with the intermittency of renewable energy sources, such as wind and solar, and even worse, several rely on fossil fuels as chemical inputs.Ammonia (NH3) synthesis is one such chemical process. Ammonia plays a vital role as fertilizer in the world's global food supply chain. At 182 M tonnes of production volume per year, the HaberBosch process for synthesizing ammonia is the largest chemical process operating today. However, inherent drawbacks to the Haber-Bosch process make it unsuitable for a sustainable future. The process utilizes fossil-fuel derived hydrogen (H2) as an input, accounting for 1.6% of global CO2 emissions. Additionally, the process's centralization and high capital costs make it challenging to deploy in the developing world, resulting in prohibitively high fertilizer costs in regions of the world with the most food scarcity. Developing alternative, sustainable forms of ammonia production is essential towards attaining global emissions goals and decentralizing agriculture.Electrochemical ammonia (NH3) synthesis is an attractive alternative to the Haber-Bosch process. By removing the need for fossil-fuel derived hydrogen and replacing the prohibitively high pressures and temperatures with moderate reducing potentials, the electrochemical nitrogen reduction reaction (NRR) addresses many of the Haber-Bosch process's fundamental drawbacks. However, electrochemical NH3 synthesis is hindered by prohibitively low selectivity; H2 production is kinetically favored over NH3 production on every potential electrocatalyst currently known.In this thesis, we show how insights from electronic structure clculations and theoretical kinetic modeling can be used to (1) understand the activity and selectivity challenges in electrochemical NH3 synthesis and (2) propose and improve alternative ammonia synthesis systems. In particular, we examine the role that metal nitrides will play in achieving these goals by developing a theoretical understanding of their formation, activity, and stability. We also develop kinetic models for understanding non-aqueous NRR, with a focus on lithium-mediated nitrogen reduction. These theoretical frameworks are further improved through successful experimental collaborations. The resulting systems demonstrate a promising pathway towards selective and sustainable ammonia productiona.

ISBN: 9798544204145Subjects--Topical Terms:

656992
Electrolytes.

Theoretical Approaches Towards Selective Electrochemical Nitrogen Reduction.
LDR:03777nmm a2200325 4500 001 2344870
005 20220531062202.5
008 241004s2021 ||||||||||||||||| ||eng d
020 $a 9798544204145
035 $a (MiAaPQ)AAI28688367
035 $a (MiAaPQ)STANFORDrv006dc6491
035 $a AAI28688367
040 $a MiAaPQ $c MiAaPQ
100 1 $a Statt, Michael J. $3 3683699
245 1 0 $a Theoretical Approaches Towards Selective Electrochemical Nitrogen Reduction.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 180 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-07, Section: B.
500 $a Advisor: Cargnello, Matteo; Noerskov, Jens; Tarpeh, William.
502 $a Thesis (Ph.D.)--Stanford University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Anthropogenic climate change poses an extraordinary risk to all aspects of life on the planet in the coming decades. There is an urgent need to diminish the world's reliance on fossil fuels. However, transitioning industrial chemical processes to renewable energy inputs presents a unique challenge to net-zero emission targets. Many processes struggle with the intermittency of renewable energy sources, such as wind and solar, and even worse, several rely on fossil fuels as chemical inputs.Ammonia (NH3) synthesis is one such chemical process. Ammonia plays a vital role as fertilizer in the world's global food supply chain. At 182 M tonnes of production volume per year, the HaberBosch process for synthesizing ammonia is the largest chemical process operating today. However, inherent drawbacks to the Haber-Bosch process make it unsuitable for a sustainable future. The process utilizes fossil-fuel derived hydrogen (H2) as an input, accounting for 1.6% of global CO2 emissions. Additionally, the process's centralization and high capital costs make it challenging to deploy in the developing world, resulting in prohibitively high fertilizer costs in regions of the world with the most food scarcity. Developing alternative, sustainable forms of ammonia production is essential towards attaining global emissions goals and decentralizing agriculture.Electrochemical ammonia (NH3) synthesis is an attractive alternative to the Haber-Bosch process. By removing the need for fossil-fuel derived hydrogen and replacing the prohibitively high pressures and temperatures with moderate reducing potentials, the electrochemical nitrogen reduction reaction (NRR) addresses many of the Haber-Bosch process's fundamental drawbacks. However, electrochemical NH3 synthesis is hindered by prohibitively low selectivity; H2 production is kinetically favored over NH3 production on every potential electrocatalyst currently known.In this thesis, we show how insights from electronic structure clculations and theoretical kinetic modeling can be used to (1) understand the activity and selectivity challenges in electrochemical NH3 synthesis and (2) propose and improve alternative ammonia synthesis systems. In particular, we examine the role that metal nitrides will play in achieving these goals by developing a theoretical understanding of their formation, activity, and stability. We also develop kinetic models for understanding non-aqueous NRR, with a focus on lithium-mediated nitrogen reduction. These theoretical frameworks are further improved through successful experimental collaborations. The resulting systems demonstrate a promising pathway towards selective and sustainable ammonia productiona.
590 $a School code: 0212.
650 4 $a Electrolytes. $3 656992
650 4 $a Electrodes. $3 629151
650 4 $a Nitrogen. $3 1314426
650 4 $a Alternative energy. $3 3436775
650 4 $a Chemical engineering. $3 560457
650 4 $a Sustainability. $3 1029978
690 $a 0640
690 $a 0542
690 $a 0363
710 2 $a Stanford University. $3 754827
773 0 $t Dissertations Abstracts International $g 83-07B.
790 $a 0212
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28688367