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| Study on Preparation of Multiform Carbon Microspheres based on Eucalyptus Prehydrolysis Liquid |
| Received:August 29, 2022 |
| DOI：10.11981/j.issn.1000-6842.2022.04.54 |
| Key Words:prehydrolysis liquid;hydrothermal carbonization;multiform carbon microsphere;forming mechanism |
| Fund Project:广东省植物资源生物炼制重点实验室资助项目（2021B1212040011）；山东济宁重点研发项目（2022JBZP003）；浙江省科技计划项目（2022C01234）。 |
| Author Name | Affiliation | Postcode | | DONG Jiran* | Plant Fibril Material Science Research Center， State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510641 | 510641 | | ZENG Jinsong | Plant Fibril Material Science Research Center， State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510641 | 510641 | | LI Pengfei | Plant Fibril Material Science Research Center， State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510641 | 510641 | | CHEN Kefu | Plant Fibril Material Science Research Center， State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510641 | 510641 |
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| Abstract: |
| Eucalyptus prehydrolysis liquor （PHL）， a by-product of the dissolved pulp production， was used as raw material to prepare hydrothermal carbon microspheres via hydrothermal carbonization. The influence of poly（4-styrenesulfonic acid-comaleic acid） sodium salt （PSSMA） dosage on the morphology and yield of carbon microspheres was discussed， and the formation mechanism of carbon microspheres with different structures was analyzed. The results showed that PHL was an ideal carbon source for the preparation of carbon microspheres. PSSMA can regulate the morphology of carbon microspheres by providing electrostatic repulsion on their surface， leading to the transformation of carbon microspheres from cross-linked sphere cluster structure to mono-dispersed spherical structure and microsphere superstructure. With increasing in PSSMA dosage and prolongation of carbonization time， the particle size of carbon microspheres and their superstructures decreased first and then leveled off. However， PSSMA has little effect on the yield of carbon microspheres. |
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