- Changqing Cao, Yupeng Xie, Ce Bian, Hui Jin. Supercritical Water Gasification of Black Liquor with Metal Oxides as the Catalyst. The 2nd International Symposium on Biomass/Wastes Energy and Environment (BEE2019), Tianjin, China, May 23-26, 2019
- Changqing Cao, Hui Jin, Yupeng Xie, Gaoyun Wang. Supercritical Water Gasification for Hyrogen Production—an Innovative Treatment Method of Black Liquor. The 4th International Conference on New Energy and Future Energy System (NEFES 2019). July 21-24, 2019, Macao, China (Invited report)
- Changqing Cao, Ce Bian, Gaoyun Wang, Hui Jin. Hydrogen Production from Co-gasification of Soda Lignin and Plastics in Supercritical Water. The 17th International Conference on Clean Energy (ICCE-2019) . August 9-12, 2019, Shenyang, China
Changqing Cao, Yi Zhang, Liejin Guo, Hui Jin. Hydrogen Production from Supercritical Water Gasification of Coal and Black Liquor Blends. The 15th International Conference on Clean Energy (ICCE-2017). Xi’an, China, 2017.12 (Keynote)
- 曹长青,张翼,郭烈锦,金辉. 造纸黑液与麦秸秆超临界水共气化制氢实验研究. 第17届全国氢能会议,暨第9届两岸三地氢能研讨会. 广西桂林电子科技大学,2017.10
- Changqing Cao, Liejin Guo, Hui Jin, Xiangdong Yao. Influence of concentration on the system performance of supercritical water gasification of black liquor coupled with pulping process. 8th International Conference on Hydrogen Production (ICH2P-2017), Brisbane, Australia, 2017, 7
- Changqing Cao, Lichao Xu, Liejin Guo, Hui Jin. Supercritical water gasification of black liquor at high temperatures for maximum hydrogen production. 8th International Symposiun on Multiphase Flow, Heat Mass Transfer and Energy Conversion (ISMF2016), Chengdu,2016,12
- Wen Cao, Changqing Cao, Liejin Guo, Xiangdong Yao. Assessment of sugarcane bagasse gasification in supercritical water. 8th International Symposiun on Multiphase Flow, Heat Mass Transfer and Energy Conversion (ISMF2016), Chengdu,2016,12
- Wen Cao, Changqing Cao, Liejin Guo, Hui Jin, Xiangdong Yao. Hydrogen production from chicken manure by supercritical water gasification in a fluidized bed reactor. 5th Asia-Pacific Forum on Renewable Energy, Jeju, Korea, 2015.11
- 曹长青,金辉,郭烈锦. 造纸黑液超临界水气化制氢能量和技术分析,第十六届全国氢能会议,暨第八届两岸三地氢能研讨会,江苏科技大学,2015.11
- Changqing Cao, Liejin Guo. Supercritical Water Gasification of Lean Coal with Alkaline Black Liquor as the Additives. ICCE, China, Xi'an, 2012,10
- 曹长青,郭烈锦,陈渝楠,郭斯茂,金辉. 煤和造纸黑液在超临界水流化床系统中共气化制氢实验研究. 第十二届全国氢能学术会议,暨第四届两岸三地氢能研讨会,中国地质大学,2011.10
- Changqing Cao, Liejin Guo, Yunan Chen, Youjun Lu. Hydrogen Production by Supercritical Water Gasification of Alkaline Black Liquor. World Hydrogen Energy Conference, Germany, Essen, 2010.5
- 曹长青,郭烈锦,陈渝楠,吕友军,郭斯茂. 造纸黑液超临界水气化制氢动力学研究. 第十一届全国氢能学术会议暨第三届两岸三地氢能研讨会,浙江大学,2010.10
- 曹长青,郭烈锦,陈渝楠,吕友军. 造纸黑液超临界水气化制氢实验研究. 第十届全国氢能学术会议暨第二届两岸三地氢能研讨会,南开大学,2009.9
- Changqing Cao, Lihui Yu, Wenhao Li, Lanjun Liu, Peigao Duan, Recent Advances in Supercritical Water Gasification of Pulping Black Liquor for Hydrogen Production, in: Murat Eyvaz, Yongseung Yun and Ahmed Albahnasawi (Ed.) Clean Energy Technologies- Hydrogen and Gasification Processes, IntechOpen2022. ISBN: 978-1-80355-403-7(Clean Energy Technologies - Hydrogen and Gasification Processes | IntechOpen)
- Hui Jin, Bin Bai, Weizuo Wang, Changqing Cao, Bingru Lu, Jinwen Shi, Liejin Guo. The Resource Utilization of Plastic Waste with Supercritical Water Treatment. Science Press, 2022. ISBN: 978-0-323-95402-0 (The Resource Utilization of Plastic Waste with Supercritical Water Treatment - 1st Edition (elsevier.com))
- Liejin Guo, Changqing Cao and Youjun Lu (2010). Supercritical Water Gasification of Biomass and Organic Wastes, Biomass, Maggy Ndombo Benteke Momba (Ed.), ISBN: 978-953-307-113-8, Sciyo.(Supercritical Water Gasification of Biomass and Organic Wastes | IntechOpen)