Department of Chemical Engineering, Universidad Nacional de Colombia sede Manizales, Campus La Nubia, km 7 vía al Aeropuerto, AA 127, Manizales, Colombia.
Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA) (CCT-La Plata CONICET, UNLP, CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 No. 257, La Plata 1900, Argentina.
ScientificWorldJournal. 2022 Mar 2;2022:5728678. doi: 10.1155/2022/5728678. eCollection 2022.
Over the last four decades, a large number of studies have been published on pillared interlayered clays (PILCs) used as adsorbent materials and catalysts or supports for transition metals in heterogeneous catalysis. Particularly, PILCs have been used for water treatment through advanced oxidation processes (AOPs) to remove organic pollutants. They have also been studied in various chemical and environmental processes. Because of the growing interest in PILCs, this article is focused on analyzing scientific publications such as research/review articles and book chapters from the last four decades (from 1980 to 2019) through a bibliometric analysis (BA) to visualize and describe research trends on PILCs. By narrowing the bibliographic search to titles, keywords, and abstracts of publications related to PILCs, using Scopus and Web of Science (WoS) (the two scientific databases), a total of 3425 documents have been retrieved. The bibliometric dataset was analyzed by VantagePoint. The main research trends identified in the last four decades were the use of PILCs in environmental processes (34.4% of total publications) along with chemical processes (petrochemical reactions 17.5%, SCR NOx 10.8%, and decomposition 8.2%). In environmental processes, PILCs have been used in photo-oxidation (32%), CWPO (21.1%), and heterogeneous catalysis (19.4%). Phenols, dyes, and VOCs have been the main pollutants studied using PILCs as catalysts. Fe, Ti, Zr, Cu, and Co are the most supported active phases in PILCs. Other research trends grouped by characterization techniques, countries, research areas, institutes, scientific journals that have published the most on this topic, number of publications per 5-year period, and most frequently used keywords through the last four decades have been identified. It was determined that the number of publications on PILCs has increased since 1980 and the countries with the highest number of publications are China, Spain, and The United States of America.
在过去的四十年中，已经有大量的研究发表在用作吸附材料和过渡金属多相催化中的催化剂或载体的层柱粘土（PILCs）上。特别是，PILCs 已通过高级氧化工艺（AOPs）用于水处理，以去除有机污染物。它们也在各种化学和环境过程中进行了研究。由于对 PILCs 的兴趣日益浓厚，本文通过文献计量分析（BA）集中分析过去四十年（1980 年至 2019 年）的科学出版物，如研究/综述文章和书章节，以可视化和描述 PILCs 的研究趋势。通过将书目搜索缩小到与 PILCs 相关的出版物的标题、关键词和摘要，使用 Scopus 和 Web of Science（WoS）（两个科学数据库），共检索到 3425 篇文献。使用 VantagePoint 对文献计量数据集进行了分析。过去四十年中的主要研究趋势是将 PILCs 用于环境过程（占总出版物的 34.4％）以及化学过程（石油化工反应 17.5％，SCR NOx 10.8％和分解 8.2％）。在环境过程中，PILCs 已用于光氧化（32％），CWPO（21.1％）和多相催化（19.4％）。酚类、染料和 VOC 是使用 PILCs 作为催化剂研究的主要污染物。Fe、Ti、Zr、Cu 和 Co 是 PILCs 中最常用的负载活性相。通过过去四十年的特征化技术、国家、研究领域、研究所、发表该主题最多的期刊、每 5 年的出版物数量以及最常用的关键词，确定了其他研究趋势。确定自 1980 年以来，关于 PILCs 的出版物数量有所增加，发表出版物数量最多的国家是中国、西班牙和美国。
