化工进展
化工進展
화공진전
Chemical Industry and Engineering Progress
2015年
11期
3933-3937
,共5页
掺氮碳基材料%费托合成反应%催化剂载体%还原%选择性
摻氮碳基材料%費託閤成反應%催化劑載體%還原%選擇性
참담탄기재료%비탁합성반응%최화제재체%환원%선택성
nitrogen-doped carbon-based materials%Fischer-Tropsch synthesis reaction%catalyst support%reduction%selectivity
氮掺杂是一种对碳材料结构和性质进行修饰的重要方法。本文主要介绍了碳基材料掺氮的主要方法(即直接合成法和后处理法)及所得掺氮碳基材料的性质。重点综述了近年来掺氮碳基材料在制备费托合成钴基和铁基催化剂领域中的应用,进一步阐述了掺氮碳基材料作为新型费托合成催化剂载体所具有的主要优点:载体表面含氮基团具有锚定作用可提高金属活性组分分散度,同时,氮的掺杂不仅能够有效地提高催化剂还原度,而且富电子的氮物种可促进CO解离,从而有利于提高催化剂费托合成反应性能。在此基础上,本文也分析了掺氮碳基材料的合成和催化应用方面所存在的问题。
氮摻雜是一種對碳材料結構和性質進行脩飾的重要方法。本文主要介紹瞭碳基材料摻氮的主要方法(即直接閤成法和後處理法)及所得摻氮碳基材料的性質。重點綜述瞭近年來摻氮碳基材料在製備費託閤成鈷基和鐵基催化劑領域中的應用,進一步闡述瞭摻氮碳基材料作為新型費託閤成催化劑載體所具有的主要優點:載體錶麵含氮基糰具有錨定作用可提高金屬活性組分分散度,同時,氮的摻雜不僅能夠有效地提高催化劑還原度,而且富電子的氮物種可促進CO解離,從而有利于提高催化劑費託閤成反應性能。在此基礎上,本文也分析瞭摻氮碳基材料的閤成和催化應用方麵所存在的問題。
담참잡시일충대탄재료결구화성질진행수식적중요방법。본문주요개소료탄기재료참담적주요방법(즉직접합성법화후처리법)급소득참담탄기재료적성질。중점종술료근년래참담탄기재료재제비비탁합성고기화철기최화제영역중적응용,진일보천술료참담탄기재료작위신형비탁합성최화제재체소구유적주요우점:재체표면함담기단구유묘정작용가제고금속활성조분분산도,동시,담적참잡불부능구유효지제고최화제환원도,이차부전자적담물충가촉진CO해리,종이유리우제고최화제비탁합성반응성능。재차기출상,본문야분석료참담탄기재료적합성화최화응용방면소존재적문제。
Nitrogen doping is an important method for modifying structures and properties of the carbon materials. This paper introduces the synthetic methods (direct-synthesis and post-treatment method) and the properties of nitrogen-doped carbon-based materials. The recent application of the nitrogen-doped carbon-based materials in the research field relevant to the cobalt- and iron-based Fischer-Tropsch synthesis (FTS) catalysts is reviewed. As a new support used for the supported FTS catalyst,the prominent advantages of nitrogen-doped carbon-based materials are shown in detail. The nitrogen-containing groups on the support improve the dispersion of metallic component and the reducibility of catalyst. And the electron-rich nitrogen species also facilitates CO dissociation. These effects enhance the performance of the nitrogen-doped carbon supported catalyst in FTS reaction. In this paper,problems related to the synthesis and application of the nitrogen-doped carbon-based materials in the catalysis are also discussed.