Professor Kai Wang received his B.S. and Ph.D. degrees in Chemical Engineering from Tsinghua University in 2005 and 2010, respectively. He has engaged in teaching and scientific research since 2012, was promoted to associate professor in 2014, and worked as a visiting scholar at MIT from 2015 to 2016. He involves in teaching on "Principles of Chemical Engineering " and "Colloid and Interface Science" courses.

Add：Gongwu Building 801, Tsinghua University, Haidian, Beijing

1. Dynamic Interface Characteristics and Laws at Micro-Scale

The research focuses on the basic laws of the dynamic interfacial phenomena caused by adsorption, mass transfer or chemical reaction in the process of multiphase microdispersion. As an important part of mesoscale science project, our aims are to develop microscale dynamic interfacial tension experimental method, establish dynamic interfacial tension and interfacial adsorption ratio simulation methods via LBM, and determine control mechanism of interfacial force on the multiphase flow.

2. Flow Chemistry and Microreaction Organic Electrosynthesis

For green and safe synthesis of high-valuable fine chemicals, the research explores the principle and method of continuous organic reactions in microreactors, reveals the scientific principles of microreaction engineering. By integrating electrochemical synthesis and microreaction technology, this project also develops novel and sustainable chemical processes driven by electricity.

3. Micro-Chemical Engineering System and AI

Focusing on the intelligence of chemical processes, this research is to explore the application of AI methods in the development and scale-up of microchemical engineering system, such as developing microdispersion detection technology based on machine learning algorithms, and establishing new chemical technology based on AI optimization models. It is a new research area in Prof. Wang’s group cooperating with the Institute of Process Systems Engineering in Tsinghua University.

1. Natural Science Foundation of China, General Project, Gas-liquid dispersion laws and modeling in electrochemical microchannel reactors, 2022.1 - 2025.12

2. National Key R&D Program, Microreactor enhanced nitrification process reengineering technology and demonstration, 2021.12 – 2024.11

3. State Key Laboratory Independent Project, Research on gas-liquid dispersion law in electrosynthesis microchannel reactor, 2020.7 - 2022.6

4. Major Science and Technology Innovation Project of Shandong Province, Industrial development and demonstration of microreaction system in continuous flow synthesis of fluorane thermosensitive dyes, 2019.9 – 2022.8

5. Natural Science Foundation of China, General Project, Basic law and modeling of dynamic interfacial tension at microscale, 2018.1 - 2021.12

6. Independent Research Program of Tsinghua University, Research on radical polymerization process of microreactor, 2016.1 - 2018.12

7. Natural Science Foundation-Yunnan Joint Fund Project (sub-project), Basic theory research on hydrometallurgy microfluidic extraction, 2014.1 - 2017.12

8. State Key Laboratory Independent Project, Research on microscale droplet bubbles coalescing mechanism, 2012.12 - 2014.12

9. Natural Science Foundation of China, Youth Fund Project, Gas-liquid-liquid three-phase microscale dispersion mechanism and modeling, 2012.1 - 2014.12

10. National Excellent Doctoral Dissertation Funding Project, Research on the basic law of microdroplet coalescence, 2012.1 - 2016.12

2022

1. Liang X, Li M, Wang K^*, Luo GS. Determination of time-evolving interfacial tension and ionic surfactant adsorption kinetics in microfluidic droplet formation process. J COLLOID INTERF SCI. 2022; 617: 106-117.

2. Liang X, Zhang JYZ, Li M, Wang K^*, Luo GS. Dynamic interfacial tension and adsorption kinetics of nonionic surfactants during microfluidic droplet formation process. CHEM ENG J. 2022; 445: 136658.

3. Zheng SY, Wang K^*. Electrosynthesis of tetrabenzylthiuram disulfide via flow reactors. CHEM ENG SCI. 2022; 257: 117717.

4. Zhang SY, Liang X, Huang X, Wang K^*, Qiu T^*. Precise and fast microdroplet size distribution measurement using deep learning. CHEM ENG SCI. 2022; 247: 116926.

5. Liu D^#, Yan JY^#, Wang K^*, Wang YD^*, Luo GS. Continuous synthesis of ultrasmall core-shell upconversion nanoparticles via a flow chemistry method. NANO RES. 2022; 15: 1199-1204.

2021

1. Liang X, Wang XY, Lu SY, Wang K^*, Luo GS. Pressure drop analysis for the droplet break-up flow in a locally constrictive microchannel. CHEM ENG SCI. 2021; 230: 116190.

2. Zheng SY, Wang K^*, Luo GS. Microfluidic electrosynthesis of thiuram disulfides. GREEN CHEM. 2021; 23: 582-591.

3. Zheng SY, Yan JY, Wang K^*. Engineering research progress of electrochemical microreaction technology-A novel method for electrosynthesis of organic chemicals. ENGINEERING. 2021; 7: 22-32.

4. Zong Y, Li M, Wang K^*. Outflow boundary condition of multiphase microfluidic flow based on phase ratio equation in lattice Boltzmann method. PHYS FLUIDS. 2021; 33: 73304. (Editor’s Pick)

5. Cheng K^#, Lu SY^#, Wang K^*, Luo GS. Green and sustainable synthesis of poly(δ-valerolactone) with a TBD catalyzed ring-opening polymerization reaction. REACT CHEM ENG. 2021; 7: 76-83. (Back Cover)

2020

1. Lin XY, Wang K^*, Zhou BY, Luo GS^*. A microreactor-based research for the kinetics of polyvinyl butyral (PVB) synthesis reaction. CHEM ENG J. 2020; 383: 123181.

2. Cui YJ^#, Li YK^#, Wang K^*, Deng J, Luo GS^*. High-throughput preparation of uniform tiny droplets in multiple capillaries embedded stepwise microchannels. J FLOW CHEM. 2020; 10: 271-282.

3. Sui JS, Yan JY, Wang K^*, Luo GS. Efficient synthesis of lithium rare-earth tetrafluoride nanocrystals via a continuous flow method. NANO RES. 2020; 13: 2837-2846.

4. Sui JS^#, Yan JY^#, Liu D, Wang K^*, Luo GS^*. Continuous synthesis of nanocrystals via flow chemistry technology. SMALL. 2020; 16: 1902828.

5. Deng J, Zou PC, Wang K^*, Luo GS. Continuous-flow synthesis of (E)-2-hexenal intermediates using a two-stage microreactor system. J FLOW CHEM. 2020; 10: 661-672.

2019

1. Song J^#, Zhang SL^#, Wang K^*, Wang YD. Synthesis of million molecular weight polyacrylamide with droplet flow microreactors. J TAIWAN INST CHEM ENG. 2019; 98: 78-84.

2. Liu D, Jing Y, Wang K^*, Wang YD^*, Luo GS. Reaction study of alpha-phase NaYF₄:Yb,Er generation via a tubular microreactor: Discovery of an efficient synthesis strategy. NANOSCALE. 2019; 11: 8363-8371.

3. Lu SY, Wang K^*. Kinetic study of TBD catalyzed delta-valerolactone polymerization using a gas-driven droplet flow reactor. REACT CHEM ENG. 2019; 4: 1189-1194. (Cover)

2018

1. Riaud A^#, Zhang H^#, Wang XY, Wang K^*, Luo GS^*. Numerical study of surfactant dynamics during emulsification in a T-junction microchannel. LANGMUIR. 2018; 34: 4980-4990.

2. Qin K, Wang K^*, Luo R, Li Y, Wang T^*. Dispersion of supercritical carbon dioxide to [Emim][BF₄] with a T-junction tubing connector. CHEM ENG PROCESS. 2018; 127: 58-64.

3. Xie P, Wang K^*, Zhang JS, Hu YP, Luo GS^*. In situ removal of HBr via microdroplets for high selectivity bromobutyl rubber synthesis in a microreaction system. IND ENG CHEM RES. 2018; 57: 10883-10892.

4. Wang K^*, Zhang HM, Shen Y, Adamo A, Jensen KF^*. Thermoformed fluoropolymer tubing for in-line mixing. REACT CHEM ENG. 2018; 3: 707-713.

2017

1. Liu D, Wang K^*, Wang Y, Wang YD^*, Luo GS. A simple online phase separator for the microfluidic mass transfer studies. CHEM ENG J. 2017; 325: 342-349.

2. Xie P, Wang K^*, Wang PJ, Xia Y, Luo GS^*. Synthesizing bromobutyl rubber by a microreactor system. AIChE J. 2017; 63: 1002-1009.

3. Wang K, Luo GS^*. Microflow extraction: A review of recent development. CHEM ENG SCI. 2017; 169: 18-33.

4. Yang L, Liu GT, Luo S, Wang K^*, Luo GS^*. Investigation of dynamic surface tension in gas-liquid absorption using a microflow interfacial tensiometer. REACT CHEM ENG. 2017; 2: 232-238.

5. Lin XY, Yan S, Zhou BY, Wang K^*, Zhang JS, Luo GS^*. Highly efficient synthesis of polyvinyl butyral (PVB) using a membrane dispersion microreactor system and recycling reaction technology. GREEN CHEM. 2017; 19: 2155-2163. (Back Cover)

6. Wang K, Li LT, Xie P, Luo GS^*. Liquid-liquid microflow reaction engineering. REACT CHEM ENG. 2017; 2: 611-627.

2016-2006

1. Zhou QQ, Sun Y, Yi ST, Wang K^*, Luo GS. Investigation of droplet coalescence in nanoparticle suspensions by a microfluidic collision experiment. SOFT MATTER. 2016; 12: 1674-1682.

2. Wang K^*, Zhang LM, Zhang WL, Luo GS. Mass-transfer-controlled dynamic interfacial tension in microfluidic emulsification processes. LANGMUIR. 2016; 32: 3174-3185.

3. Qiu L, Wang K^*, Zhu S, Lu YC, Luo GS. Kinetics study of acrylic acid polymerization with a microreactor platform. CHEM ENG J. 2016; 284: 233-239.

4. Qin K, Wang K^*, Luo R, Li Y, Wang T^*. Interfacial tension and wetting properties of 1-ethyl-3-methylimidazolium tetrafluoroborate in carbon dioxide, from atmospheric pressure to supercritical state. J SUPERCRIT FLUID. 2016; 116: 83-89.

5. Qin K, Wang K^*, Li Y, Kong FH, Wang T^*. High-pressure phase behavior of 1-ethyl-3-methylimidazolium tetrafluoroborate and carbon dioxide system. RSC ADV. 2015; 5: 32416-32420.

6. Li Y, Wang K^*, Qin K, Wang T^*. Beckmann rearrangement reaction of cyclohexanone oxime in sub/supercritical water: byproduct and selectivity. RSC ADV. 2015; 5: 25365-25371.

7. Wang K^*, Qin K, Wang T, Luo GS. Ultra-thin liquid film extraction based on a gas-liquid-liquid double emulsion in a microchannel device. RSC ADV. 2015; 5: 6470-6474.

8. Wang K^*, Zhang JS, Zheng C, Dong C, Lu YC, Luo GS^*. A consecutive microreactor system for the synthesis of caprolactam with high selectivity. AIChE J. 2015; 61: 1959-1967.

9. Wang K^*, Qin K, Lu YC, Luo GS, Wang T. Gas/liquid/liquid three-phase flow patterns and bubble/droplet size laws in a double T-junction microchannel. AIChE J. 2015; 61: 1722-1734.

10. Lin XY, Wang K^*, Zhang JS, Luo GS^*. Process intensification of the synthesis of poly(vinyl butyral) using a microstructured chemical system. IND ENG CHEM RES. 2015; 54: 3582-3588.

11. Wang XY, Riaud A, Wang K^*, Luo GS^*. Pressure drop-based determination of dynamic interfacial tension of droplet generation process in T-junction microchannel. MICROFLUID NANOFLUID. 2015; 18: 503-512.

12. Wang PJ, Wang K^*, Zhang JS, Luo GS^*. Preparation of poly(p-phenylene terephthalamide) in a microstructured chemical system. RSC ADV. 2015; 5: 64055-64064.

13. Wang XY, Wang K^*, Riaud A, Wang X, Luo GS^*. Experimental study of liquid/liquid second-dispersion process in constrictive microchannels. CHEM ENG J. 2014; 254: 443-451.

14. Riaud A, Zhao SF, Wang K^*, Cheng Y, Luo GS. Lattice-Boltzmann method for the simulation of multiphase mass transfer and reaction of dilute species. PHYS REV E. 2014; 89: 533085.

15. Wang K, Lu YC, Luo GS^*. Strategy for scaling-up of a microsieve dispersion reactor. CHEM ENG TECHNOL. 2014; 37: 2116-2122.

16. Wang K, Xie L, Lu YC^*, Luo GS^*. Generating microbubbles in a co-flowing microfluidic device. CHEM ENG SCI. 2013; 100: 486-495.

17. Wang K, Xie L, Lu YC^*, Luo GS^*.Generation of monodispersed microdroplets by temperature controlled bubble condensation processes. LAB CHIP. 2013; 13: 73-76.

18. Riaud A, Wang K^*, Luo GS^*. A combined Lattice-Boltzmann method for the simulation of two-phase flows in microchannel. CHEM ENG SCI. 2013; 99: 238-249.

19. Wang K^*, Lu YC, Tostado CP, Yang L, Luo GS^*. Coalescences of microdroplets at a cross-shaped microchannel junction without strictly synchronism control. CHEM ENG J. 2013; 227: 90-96.

20. Wang K^*, Lu YC, Qin K, Luo GS^*, Wang T. Generating gas-liquid-liquid three-phase microflows in a cross-junction microchannel device. CHEM ENG TECHNOL. 2013; 36: 1047-1060.

21. Wang K^*, Lu YC, Yang L, Luo GS^*. Microdroplet coalescences at microchannel junctions with different collision angles. AIChE J. 2013; 59: 643-649.

22. Wang K^*, Lu YC, Xia Y, Shao HW, Luo GS^*. Kinetics research on fast exothermic reaction between cyclohexanecarboxylic acid and oleum in microreactor. CHEM ENG J. 2011; 169 :290-298.

23. Wang K^*, Lu YC, Xu JH, Luo GS^*. Droplet generation in micro-sieve dispersion device. MICROFLUID NANOFLUID. 2011; 10: 1087-1095.

24. Wang K, Lu YC, Xu JH, Tan J, Luo GS^*. Generation of micromonodispersed droplets and bubbles in the capillary embedded T-junction microfluidic devices. AIChE J. 2011; 57: 299-306.

25. Wang K, Lu YC, Tan J, Yang BD, Luo GS^*. Generating gas/liquid/liquid three-phase microdispersed systems in double T-junctions microfluidic device. MICROFLUID NANOFLUID. 2010; 8: 813-821.

26. Wang K, Lu YC, Shao HW, Luo GS^*. Measuring enthalpy of fast exothermal reaction with micro-reactor-based capillary calorimeter. AIChE J. 2010; 56: 1045-1052.

27. Wang K, Lu YC, Xu JH, Luo GS^*. Determination of dynamic interfacial tension and its effect on droplet formation in the T-shaped microdispersion process. LANGMUIR. 2009; 25: 2153-2158.

28. Wang K, Lu YC, Xu JH, Tan J, Luo GS^*. Liquid-liquid micro-dispersion in a double-pore T-shaped microfluidic device. MICROFLUID NANOFLUID. 2009; 6: 557-564.

29. Wang K, Lu YC, Shao H, Luo GS^*. Improving selectivity of temperature-sensitive exothermal reactions with microreactor. IND ENG CHEM RES. 2008; 47: 4683-4688.

30. Wang K, Lu YC, Shao HW, Luo GS^*. Heat-transfer performance of a liquid-liquid microdispersed system. IND ENG CHEM RES. 2008; 47: 9754-9758.

31. Wang K, Wang YJ, Chen GG, Luo GS^*, Wang JD. Enhancement of mixing and mass transfer performance with a microstructure minireactor for controllable preparation of CaCO₃ nanoparticles. IND ENG CHEM RES. 2007; 46: 6092-6098.

32. Wang K, Lu YC, Xu JH, Gong XC, Luo GS^*. Reducing side product by enhancing mass-transfer rate. AIChE J. 2006; 52: 4207-4213.

1. 骆广生; 吕阳成; 王凯等; 微化工技术, 化学工业出版社, 2020.

2. Luo Guangsheng; Deng Jian; Wang Kai.; Chapter 14. Integrated Microreaction Systems of Microdevices with Conventional Equipment, Royal Society of Chemistry, 2019.

3. Wang Kai; Xu Jianhong; Liu Guotao; Luo Guangsheng; Chapter Three-Role of Interfacial Force on Multiphase Microflow—An Important Meso-Scientific Issue, Academic Press, 2015.

4. Luo Guangsheng; Du Le; Wang Yunjun; Wang Kai; Composite Nanoparticles, Springer, 2015.

1. Mechanisms and laws of transport enhancement in microscale organic synthesis reactions, The Chemical Industry and Engineering Society of China, First Prize of Basic Science Research Achievement Award, 2021-1

2. Emerging Investigator, Journal of Flow Chemistry, 2020

3. Effects of nano-particles on the droplet coalescence in a microchannel device, Excellent Scientific Paper of China Association for Science and Technology, 2019

4. Future Scholars, Global Chinese Chemical Engineers Symposium, 2019

5. Class of Influential Researchers, Industrial & Engineering Chemistry Research, 2018

6. Emerging Investigator, Reaction Chemistry & Engineering, 2017

7. Hou Debang Chemical Industry Youth Science and Technology Award, The Chemical Industry and Engineering Society of China, 2015

8. Miniaturization of multiphase reaction processes with micro-structured chemical systems, National Excellent Doctoral Dissertation, 2012

9. Miniaturization of multiphase reaction processes with micro-structured chemical systems, Excellent Doctoral Dissertation in Beijing, 2011

Master (graduate year)

Jinsong Sui (2020), Shiyao Lu (2019), Shenglong Zhang (2019), Hao Zhang (2019), Yang Chen (2018), Qianqian Zhou (2016), Lu Qiu (2016)

Graduation Project (project year)

Yi Zong (2021), Yiping Cheng (2020), Xinglei An (2020), Xu Zhao (2019), Donghuan Lee (2019), Hanlin Wang (2018), Yuanhao Zhou (2017), Xiaorui Dong (2017), Yiting Wang (2016), Jin Song (2015), Yue Sun (2014), Shiting Yi (2013), Yifan Wang (2013)

Visiting Students

Zhang Yiwen, Beijing University of Chemical Technology, 2020-2021

Cheng Kai, Yanbian University, 2018

Research Assistants

Xingrui Qi, 2020-2021

Liming Zhang, 2016-2020