Ren Xiaohong

1986～1990 bachelor of engineering, mixed class, Zhejiang University
1990-1993 master of chemical engineering, Zhejiang University
1999-2003 doctor, RWTH Aachen

Publications
1) Liu Boping, Ren Xiaohong, Yang Yongrong, Rong Shunxi, The thermal activation process of olefin catalyst with silica support. Journal of Chemical Engineering of Chinese Universities, 1999, 13(2), 169-172.
2) Liu Boping, Ren Xiaohong, Yang Yongrong, Rong Shunxi, Studies on silica-supported polyolefin catalysts: IV. Effects of chemical activation on catalyst phase structure. Chemical Reaction Engineering and Technology, 1999, 15(2), 1-5.
3) Liu Boping, Ren Xiaohong, Yang Yongrong, Rong Shunxi, Studies on silica-supported polyolefin catalysts: V. Effects of chemical activation on catalyst phase structure and ehtylenepolymerization kinetics. Chemical Reaction Engineering and Technology, 1999, 15(2), 6-10.
4) Liu Boping, Ren Xiaohong, Yang Yongrong, Rong Shunxi, Studies on silica-supported polyolefin catalysts: VI.Macro- and micro- morphology of the silica supports by SEM method. Chemical Reaction Engineering and Technology, 2000, 16(3), 228-232.
5) Liu Boping, Ren Xiaohong, Yang Yongrong, Rong Shunxi, Studies on silica-supported polyolefin catalysts: VII. Criteria for support’s local sintering during thermoactivation. Chemical Reaction Engineering and Technology, 2000, 16(3), 233-238.
6) Huo Chao, Ren Xiaohong, Zong Yingwei, Yang Yongrong, Rong Shunxi, Research of morphology of supported polyolefin catalyst and its effect on polymerization activity using fractal theory. Journal of Chemical Engineering of Chinese Universities, 14, 2000, 14(6), 570-576.
7) Yang Yongrong, Ye Zhibin, Ren Xiaohong, A Study on ethylene polymerization and particle morphology with catalyst TiCl4-Mg(OC2H5)2: Ⅰ.Ethylene polymerization and characterization of morphology. Petrochemical Technology, 2001, 30(12), 916-920.
8) X. H. Ren, I. Bartusseck, M. Bertmer, D. E. Demco, S. Stapf, B. Blmich, „NMR study of changing pore size and tortuosity during deactivation and decoking of a naphtha reforming catalyst“, Magn. Reson. Imag., 19, p.581-582 (2001).
9) Yang Yongrong, Ye Zhibin, Ren Xiaohong, Ethylene polymerization and particle morphology with TiCl4-Mg(OC2H5)2 Catalyst: II. The effect of prepolymerization on the modification of morphology of polymer particles. Petrochemical Technology, 2002, 31(1), 21-23.

X.-H. Ren, M. Bertmer, S. Stapf, D. E. Demco, B. Blmich, C. Kern, A. Jess, “Deactivation and regeneration of a naphtha reforming catalyst”, Applied Catalysis A 228, p.39-52 (2002).
X. -H. Ren, M. Bertmer, H. Khn, S. Stapf, D. E. Demco, B. Blmich, C. Kern, A. Jess, “1H, 13C and 129Xe NMR study of changing pore size and tortuosity during deactivation and decoking of a naphtha reforming catalyst”, NATO Science Series II:Mathematics, Physics and Chemistry, Vol. 76, p.603-608 (2002).
X.-H. Ren, S. Stapf, B. Blmich, “Molecular mobility in fixed-bed reactors – combining NMR techniques for micro- and macroporous system”, Magn. Reson. Imag., 21 p.261-268 (2003).
C. Huo, X.H. Ren, B.P. Liu, Y.R. Yang, S.X. Rong, “Fractal approach for modeling the morphology evolution of olefin polymerization with heterogeneous catalyst”, J. Applied Polymer Science, 90 p.1463-1470 (2003).
Xiaohong Ren, NMR study of molecular transport in model fixed bed reactors, Mainz GmbH, Aachen, 2003. (博士论文)
Huo Chao, Meng Jun, Ren Xiaohong, Yang Yongrong, and Rong Shunxi, “Fractal Evolving Theory and Growing Model of Olefin Polymerization Process”, Chinese J. Chem. Eng., 11(1), p.33-37 (2003).
D.Tang, A. Jess, X. H. Ren, B. Bluemich, S. Stapf, “Axial dispersion and wall effect in narrow fixed bed reactors: a comparative study based on RTD and NMR measurements”, Chem. Eng. Technol., 27, p.866-873 (2004).
X.-H. Ren, S. Stapf, B. Blmich, ”NMR velocimetry of flow in model fixed-bed reactors of low aspect ratios”, AIChE, 51 p.392-405 (2005).
X.-H. Ren, S. Stapf, B. Blmich, “Magnetic resonance visulisation of flow and pore structure in packed beds with low aspect ratio“, Chem. Eng. Technol., 28 p.219-225 (2005).
Siegfried Stapf, Xiaohong Ren, Elena Talnishnikh and Bernhard Blmich, “Spatial distribution of coke residues in porous catalyst pellets analyzed by field-cycling relaxometry and parameter imaging”, Magn. Reson. Imag., 23(2), p.383-386 (2005). Xiaohong Ren, Siegfreid Stapf, “ Multiscale approach to catalyst design” in “Nuclear Magnetic Resonance Imaging in Chemical Engineering” edited by Siegfired Stapf and Song-I Han, Wiley-VCH, Weinheim, Germany,2005.(to be published)

Conference Paper
Ren, X. H., Liu, B. P., Yang, Y. R., Rong, S. X., “In situ FTIR studies on surface dynamic mechnism for different silica gel’s thermo-activation processes”. 8th APCChE Congress, Seoul, Korea, August 16-19, 1999.
Liu, B. P., Ren, X. H., Yang, Y. R., Rong, S. X., “In situ FTIR studies on dymamic reaction mechanism between TiCl4 and surface groups of silica gel”. 8th APCChE Congress, Seoul, Korea, August 16-19, 1999.
Liu, B. P., Ren, X. H., Yang, Y. R., Rong, S. X., “In situ FTIR studies on surface dynamic mechnism of silica gel’s thermo-activation processes”. 8th APCChE Congress, Seoul, Korea, August 16-19, 1999.
Liu, B. P., Ren, X. H., Yang, Y. R., Rong, S. X., “Studies on supported polyolefin catalysts – The role of mechanical strength of catalysts and its ultrasonic characterization”. Asia-Pacific Chemical Reaction Engineering (APCRE) Symposium, Hongkong, June 13-16, 1999.
C. Huo, X. H. Ren, B. P. Liu, Y. R. Yang, S. X. Rong, “Fractal approach for modeling morphology evolution of olefin polymerization on heterogeneous catalyst”. 1st European Conference on the Reaction Engineering of Polyolefins Processes, Lyon, France, July 3-6, 2000.
X. -H. Ren, I. Bartusseck, M. Bertmer, D. E. Demco, S. Stapf, B. Blmich, C. Kern, A. Jess, “NMR Study of Changing Pore Size and Tortuosity during Deactivation and Decoking of a Naphtha Reforming Catalyst”. 5th International Meeting on Recent Advances in MR Applications to Porous Media, Bologna, Italy, October 9-11. 2000.
X. H. Ren, M. Bertmer, D. E. Demco, S. Stapf, B. Blmich, “1H and 13C NMR study on a naphtha reforming catalyst”. IX International Symposium on Magnetic Resonance in Colloid and Interface Science, St. Petersburg, Russia, June 26-30, 2001.
H. Khn, X.-H. Ren, D. E. Demco, S. Stapf, B. Blmich, C. Kern, A. Jess, “129Xe NMR study of changing pore size during deactivation and regeneration of a naphtha reforming catalyst”. IX International Symposium on Magnetic Resonance in Colloid and Interface Science, St. Petersburg, Russia, June 26-30, 2001.
X.-H. Ren, S. Stapf, B. Blmich, “Flow propagators and flow imaging in packed beds of low tube-to-particle diameter ratio”. 43rd Experimental Nuclear Magnetic Resonance Conference (ENC), Asilomar, USA, April 15 –19, 2002.
X.-H. Ren, S. Stapf, B. Blmich, ”Study of flow velocity profile and distribution in packed beds”. 6th Conference on Magnetic Resonance in Porous Media, Ulm, Germany, September 8-12, 2002.
X.-H. Ren, H. Khn, S. Stapf, D. E. Demco, B. Blmich, “NMR diffusometry and cryoporometry on a naphtha reforming catalyst”. 6th Conference on Magnetic Resonance in Porous Media, Ulm, Germany, September 8-12, 2002.
Xiaohong Ren, Siegfried Stapf, Bernhard Blmich, Dahai Tang, Andreas Jess, ”NMR study of changing morphology of porous Al2O3 during deactivation and regeneration”. 7th International Conference on Magnetic Resonance Microscopy, Snowbird, Utah, USA, September 20 – 25, 2003.
Xiaohong Ren, Siegfried Stapf, Bernhard Blmich, “Dynamic microscopy of flow in model fixed-bed reactors”. 7th International Conference on Magnetic Resonance Microscopy, Snowbird, Utah, USA, September 20 – 25, 2003.
X.-H. Ren, S. Stapf, B. Blmich, D.-H.Tang, A. Jess, “Effect of coke deposition upon pore structure and self-diffusion in a naphtha reforming catalyst and its Al2O3 support. Annual Meeting on Magnetic Resonance: 25 Years Magnetic Resonance GDCH, Leipzig, Germany, September 29 – October 2, 2003.
Xiaohong Ren, Siegfried Stapf, Bernhard Blmich, ”Nuclear Magnetic Resonance study of velocity imaging and velocity distribution of flow in model packed beds”. Proceedings of International 10th Beijing Conference and Exhibition on Instrumental Analysis, Beijing, October 13-16, 2003.
X.-H. Ren, S. Stapf, B. Blmich, “Magnetic Resonance visualization of flow in model fixed bed reactors with low aspect ratio”. 7th International Meeting on Recent Advances in MR Applications to Porous Media, Palaiseau, France, July 4-8, 2004.
S. Stapf, X. -H. Ren, E. Talnishnikh, B. Blmich, ”Spatial distribution of coke residue in porous catalyst pellets analyzed by field-cycling relaxometry and parameter imaging”. 7th International Meeting on Recent Advances in MR Applications to Porous Media, Palaiseau, France, July 4-8, 2004.
X. -H. Ren. S. Stapf, B. Blmich, Magnetic resonance imaging of flow and pore structure in packed beds with low aspect ratio. 26th Annual Meeting on Magnetic Resonance, Aachen, Germany, September 28.-30., 2004.