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Geopolymers based on spent catalyst residue from a fluid catalytic cracking (FCC) process

机译:基于来自流化催化裂化(FCC)过程的废催化剂残留物的地质聚合物

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摘要

This paper assesses the use of alkali activation technology in the valorization of a spent fluid catalytic cracking (FCC) catalyst, which is a residue derived from the oil-cracking process, to produce 'geopolymer' binders. In particular, the effects of activation conditions on the structural characteristics of the spent catalyst-based geopolymers are determined. The zeolitic phases present in the spent catalyst are the main phases participating in the geopolymerization reaction, which is driven by the conversion of the zeolitic material to a highly Al-substituted aluminosilicate binder gel. Higher alkali content and SiO_2/Na_2O ratio lead to a denser structure with a higher degree of geopolymer gel formation and increased degree of crosslinking, as identified through ~(29)Si MAS NMR. These results highlight the feasibility of using spent FCC catalyst as a precursor for geopolymer production.
机译:本文评估了碱活化技术在废液催化裂化(FCC)催化剂的增值中的用途,该催化剂是从油裂化过程中产生的残余物,用于生产“地聚合物”粘合剂。特别地,确定活化条件对废催化剂基地质聚合物的结构特征的影响。废催化剂中存在的沸石相是参与地聚反应的主要相,这是由沸石材料向高度Al取代的铝硅酸盐粘合剂凝胶的转化驱动的。较高的碱含量和SiO_2 / Na_2O比导致致密的结构,具有更高的地质聚合物凝胶形成度和交联度,如〜(29)Si MAS NMR所鉴定。这些结果突出了使用废FCC催化剂作为生产地质聚合物的前体的可行性。

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  • 来源
    《Fuel》 |2013年第7期|493-502|共10页
  • 作者单位

    Institute de Ciencia y Tecnologla del Hormigon (ICITECH), Universitat Politicnica de Valencia, Valencia 46022, Spain,Department of Chemical and Biomolecular Engineering, University of Melbourne, Victoria 3010, Australia;

    Department of Chemical and Biomolecular Engineering, University of Melbourne, Victoria 3010, Australia,Department of Materials Science and Engineering, University of Sheffield, Sheffield SI 3JD, United Kingdom;

    Department of Chemical and Biomolecular Engineering, University of Melbourne, Victoria 3010, Australia,Department of Materials Science and Engineering, University of Sheffield, Sheffield SI 3JD, United Kingdom;

    School of Chemistry and Bio21 Institute, University of Melbourne, Victoria 30 JO, Australia;

    Institute de Ciencia y Tecnologla del Hormigon (ICITECH), Universitat Politicnica de Valencia, Valencia 46022, Spain;

    Institute de Ciencia y Tecnologla del Hormigon (ICITECH), Universitat Politicnica de Valencia, Valencia 46022, Spain;

    Institute de Ciencia y Tecnologla del Hormigon (ICITECH), Universitat Politicnica de Valencia, Valencia 46022, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Geopolymer; Fluid catalytic cracking; Catalyst residue; Zeolites;

    机译:地聚合物流化催化裂化;催化剂残留物;沸石;

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