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生物质化学工程 ›› 2023, Vol. 57 ›› Issue (3): 56-60.doi: 10.3969/j.issn.1673-5854.2023.03.008

• 研究报告 • 上一篇    下一篇

一步热解法制备葵花秆基磷掺杂多孔炭及其性能研究

刘艳艳1, 张羽涵2, 王贵龙1, 夏启华2, 孙康3, 林冠烽1,2,*()   

  1. 1. 福建农林大学 材料工程学院, 福建 福州 350002
    2. 福建农林大学 金山学院, 福建 福州 350002
    3. 中国林业科学研究院 林产化学工业研究所, 江苏 南京 210042
  • 收稿日期:2022-04-12 出版日期:2023-05-30 发布日期:2023-05-31
  • 通讯作者: 林冠烽 E-mail:feton.lin@hotmail.com
  • 作者简介:林冠烽, 硕士生导师, 研究领域: 林产化学加工工程; E-mail: feton.lin@hotmail.com
    刘艳艳(1996—), 女, 江西瑞金人, 硕士生, 主要从事生物质能源与炭材料研究工作

Preparation and Properties of Sunflower Stalk-based Phosphorus Doped Porous Carbon by One-step Pyrolysis Method

Yanyan LIU1, Yuhan ZHANG2, Guilong WANG1, Qihua XIA2, Kang SUN3, Guanfeng LIN1,2,*()   

  1. 1. School of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
    2. Jinshan College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
    3. Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, China
  • Received:2022-04-12 Online:2023-05-30 Published:2023-05-31
  • Contact: Guanfeng LIN E-mail:feton.lin@hotmail.com

摘要:

以葵花秆为碳源,植酸为磷掺杂剂和活化剂,采用一步热解法制备磷掺杂多孔炭。讨论浸渍比、活化温度、保温时间对磷掺杂多孔炭得率和碘吸附值的影响,并采用全自动比表面积及孔径分析仪、X射线光电子能谱仪对其孔隙结构、表面化学结构及结合状态进行表征。研究结果表明:随着浸渍比、活化温度、保温时间的增加,葵花秆基磷掺杂多孔炭的碘吸附值呈先增大后减小的趋势;植酸的活化有利于多孔炭比表面积和孔容积的提升;植酸作为磷源,实现了多孔炭的磷掺杂,其磷元素的结合形式为C—PO3、C—P—O、C3—PO、C—P=O和C—P。较佳工艺条件即浸渍比(质量比)值2,活化温度900 ℃,保温时间2 h下制备的磷掺杂多孔炭的比表面积为992.7 m2/g, 总孔容积为1.33 cm3/g, 碘吸附值为1 099.8 mg/g。

关键词: 葵花秆, 多孔炭, 植酸, 磷掺杂, 活化

Abstract:

Phosphorus doped porous carbon was prepared by one-step pyrolysis using sunflower straw as carbon source and phytic acid as phosphorus dopant and active agent. The effect of impregnation ratio, activation temperature and holding time on the yield and iodine adsorption value of phosphorus-doped porous carbon was discussed. The pore structure, surface chemical properties and binding state of doped porous carbon were analyzed by automatic specific surface area analyzer and X-ray photoelectron spectroscopy. The results showed that with the increases of impregnation ratio, activation temperature and holding time, the iodine adsorption value of sunflower stalk-based phosphorus doped porous carbon increased first and then decreased. The activation of phytic acid was conducive to the increase of specific surface area and pore volume of porous carbon. Phytic acid was used as a phosphorus source to achieve phosphorus doping of porous carbon, and the binding types of phosphorus were C—PO3、C—P—O、C3—PO、C—P=O and C—P. Under the optimum conditions, when the impregnation ratio was 2, activation temperature was 900 ℃ and the holding time was 2 h, the specific surface area, total pore volume and iodine adsorption value of phosphorus-doped porous carbon were 992.7 m2/g, 1.33 cm3/g and 1 099.8 mg/g, respectively.

Key words: sunflower straw, porous carbon, phytic acid, phosphorus doping, activation

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