Hydrides, Amides and Imides Mediated Ammonia Synthesis and Decomposition

Gao, Wenbo; Guo, Jianping; Chen, Ping

doi:10.1002/cjoc.201800586

Cited by 44 publications

(39 citation statements)

References 64 publications

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“…However, the practical application of these hydride catalysts might be limited by the sophisticated preparation process and by their high sensitivity to air and moisture. [ 77,78 ]…”

Section: Iron Catalystsmentioning

confidence: 99%

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Development and Recent Progress on Ammonia Synthesis Catalysts for Haber–Bosch Process

Humphreys

Lan

Tao

2020

Adv Energy and Sustain Res

311

148

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Due to its essential use as a fertilizer, ammonia synthesis from nitrogen and hydrogen is considered to be one of the most important chemical processes of the last 100 years. Since then, an enormous amount of work has been undertaken to investigate and develop effective catalysts for this process. Although the catalytic synthesis of ammonia has been extensively studied in the last century, many new catalysts are still currently being developed to reduce the operating temperature and pressure of the process and to improve the conversion of reactants to ammonia. New catalysts for the Haber–Bosch process are the key to achieving green ammonia production in the foreseeable future. Herein, the history of ammonia synthesis catalyst development is briefly described as well as recent progress in catalyst development with the aim of building an overview of the current state of ammonia synthesis catalysts for the Haber–Bosch process. The new emerging ammonia synthesis catalysts, including electride, hydride, amide, perovskite oxide hydride/oxynitride hydride, nitride, and oxide promoted metals such as Fe, Co, and Ni, are promising alternatives to the conventional fused‐Fe and promoted‐Ru catalysts for existing ammonia synthesis plants and future distributed green ammonia synthesis based on the Haber–Bosch process.

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“…However, the practical application of these hydride catalysts might be limited by the sophisticated preparation process and by their high sensitivity to air and moisture. [ 77,78 ]…”

Section: Iron Catalystsmentioning

confidence: 99%

“…The activity of this 20% Ni–BaH 2 catalyst in the chemical looping process at 300 °C and 0.1 MPa is 2033 μmol g −1 l −1 . [ 79 ] Further details on these catalysts have been laid out in a review article recently published by Gao et al [ 78 ]…”

Section: Iron Catalystsmentioning

confidence: 99%

Development and Recent Progress on Ammonia Synthesis Catalysts for Haber–Bosch Process

Humphreys

Lan

Tao

2020

Adv Energy and Sustain Res

311

148

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“…Ammonia (NH 3 ) is one of the most important chemical raw materials as agricultural fertilizer, clean fuels, and hydrogen energy carrier with high energy density. [ 1‐4 ] Despite the development of NH 3 synthesis from nitrogen and hydrogen within the past century, this process is still high energy‐ and carbon‐intensive. The industrial manufacture of NH 3 generally comes from Haber–Bosch (HB) process using Fe‐based catalyst, which is performed at harsh conditions (≥ 480°C and ≥ 15 MPa), accounts for 1%—2% of global energy consumption, and emits ~1% of global CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and High‐Value Utilization of Ammonia

et al. 2022

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Comprehensive Summary Ammonia is a key component in fertilizer and the carbon‐free hydrogen carrier. Catalytic ammonia synthesis and utilization have played a central role in the development of chemical engineering. The industrial production of ammonia remains dependent on the energy‐ and carbon‐intensive Haber–Bosch process. A major effort has been devoted to developing robust and efficient catalysts, as well as alternative benign processes. Herein, we detail our endeavors that develop the ammonia synthesis and decomposition catalysts, and utilize the ammonia energy. We firstly discuss the catalysts for ammonia synthesis via dissociative and associative process, and the regulation of catalysts’ properties. Then, we review the burgeoning electrocatalytic nitrogen reduction process, focusing on the enhanced catalytic performances by the regulation of the catalysts and the electrode. Additionally, we provide a novel high‐value utilization of ammonia to achieve the “zero‐carbon” circular economy. The promising catalysts, reactors, and ammonia energy systems have been discussed in detail. We end this Account that offers future research directions and prospects of ammonia. What is the most favorite and original chemistry developed in your research group? Ammonia synthesis catalysts and ammonia energy. How do you get into this specific field? Could you please share some experiences with our readers? I have received my B.S. in 1997. After graduation from college, I have joined Prof. Kemei Wei's group at the National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University. Since 1972, our group has dedicated to the efficient industrial synthesis and high‐value utilization of ammonia. So, I have done much work in this field. I think that the research work should match with the major national demands and global challenges. The researcher should focus on cutting‐edge discoveries and creative work. How do you supervise your students? When the students come in our group, I teach them the norms and standards of academic research and writing. After that, I would formulate the research project based on their motivations, aspirations, and academic background. If they have any problems during the project, I will help them overcome. We discuss termly on their research methods and evaluate their research results. I also encourage the students to prepare in advance for the next steps in their career or further study. What is the most important personality for scientific research? Research integrity. What are your hobbies? What's your favorite book(s)? I like playing badminton and table tennis. My favorite books are history and industry development plan. How do you keep the balance between research and family? The understanding and support from the family are very important. I have increased my efficiency and productivity, and tried alternative schedules.

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“…[4,16,21,[23][24][25] Recently, Chen et al concisely reviewed hydrides in thermocatalytic ammonia synthesis at milder reaction conditions. [3,26] To our knowledge, there are no reviews covering mechanism of lately developed heterogeneous catalysts for NH 3 synthesis in details and will be considered in this review. The review first sorts the compiled formulations based on properties of materials into electrides, hydrides, nitrides, oxides, intermetallic/ alloys and other supported catalysts, and each is discussed in the subsequent sections followed by summary and outlook.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Chen et al. concisely reviewed hydrides in thermocatalytic ammonia synthesis at milder reaction conditions [3,26] . To our knowledge, there are no reviews covering mechanism of lately developed heterogeneous catalysts for NH 3 synthesis in details and will be considered in this review.…”

Section: Introductionmentioning

confidence: 99%