45. Shang-Bin Liu, Tien-Sung Lin, Tran-Chin Yang, Tung-Ho Chen, Eng-Chin Hong and Ryong Ryoo EPR and 129Xe NMR studies of copper-exchanged NaY zeolites J. Phys. Chem. 99, 8277-8282 (1995).
44. Ihl Hyun Cho, Sung June Cho, Seung Bin Park and Ryong Ryoo Ru clusters with controlled sizes in NaY zeolite: Catalytic activity for ethane hydrogenolysis and XANES J. Catal. 153, 232-238 (1995).
43. Ryong Ryoo and Ji Man Kim Structural order in MCM-41 controlled by shifting silicate polymerization equilibrium J. Chem. Soc., Chem. Commun. , 711-712 (1995).
42. Chanho Pak and Ryong Ryoo Application of 129Xe NMR spectroscopy and EXAFS to probe the formation of a bimetallic cluster in zeolite Y Appl. Magn. Reson. 8, 475-488 (1995).
41. Joong-Whan Lee, Ryong Ryoo, Mu Shik Jhon and Kyoung-Ik Cho Bond density and physicochemical properties of a hydrogenated silicon nitride film J. Phys. Chem. Solids 56, 293-299 (1995).
40. Ryong Ryoo, Hyotcherl Ihee, Ja Hun Kwak, Gon Seo and Shang-Bin Liu 129Xe Nuclear magnetic resonance study on a solid-state defect in HZSM-5 zeolite Micropor. Mater. 4, 59-64 (1995).
39. Young Kil Kim, Jae Eui Yie, Sung June Cho and Ryong Ryoo Studies on the deactivation-resistant Ru catalyst J. Korean Ind. Eng. Chem. 5, 808-818 (1994).
38. Chanho Pak, Sung June Cho, Jeong Yong Lee and Ryong Ryoo Preparation of iridium clusters in zeolite Y via cation exchange: EXAFS, xenon adsorption, and 129Xe NMR Studies J. Catal. 149, 61-69 (1994).
37. J.-G. Kim, T. Kompany, R. Ryoo, T. Ito and J. Fraissard 129Xe n.m.r. study of Y3+-, La3+-, and Ce3+-exchanged X zeolites Zeolites 14, 427-432 (1994).
36. Ryong Ryoo, Ja Hun Kwak and Louis-Charles de Ménorval A 129Xe NMR spectroscopic technique to probe exclusively the internal surface of zeolite crystallites by coating of the external surface J. Phys. Chem. 98, 7101-7103 (1994).
35. H. Ihee, R. Ryoo, T. Bécue, C. Potvin, J.-M. Manoli and G. Djéga-Mariadassou Clustering of platinum atoms in zeolite EMT supercage: Comprehensive physicochemical characterization Stud. Surf. Sci. Catal. 84, 765-772 (1994).
34. Young H. Chang, Kyung H. Choi, Warren T. Ford, Sung June Cho and Ryong Ryoo XANES and EXAFS study of a platinum phthalocyanine J. Chem. Soc., Chem. Commun. , 785-787 (1994).
33. Tatjana Rades, Chanho Pak, Michèle Polisset-Thfoin M, Ryong Ryoo and Jacques Fraissard Characterization of bimetallic NaY-supported Pt-Pd catalyst by EXAFS, TEM and TPR Catal. Lett. 29, 91-103 (1994).
32. Jiho Park, Wee-Kyeong Kang, Ryong Ryoo, Kyung-Hoon Jung and Du-Jeon Jang A study on the photophysical properties of anthracene in zeolite J. Photochem. Photobiol., A 80, 333-339 (1994).
31. Ryong Ryoo and Sung June Cho Platinum cluster supported on zeolite a by ion-exchange of Pt(NH3)42+ Stud. Surf. Sci. Catal. 75, 1633-1636 (1993).
30. Ryong Ryoo, Sung June Cho, Chanho Pak and Jeong Yong Lee Clustering of platinum atoms into nanoscale particle and network on NaY zeolite Catal. Lett. 20, 107-115 (1993).
29. Ja Hun Kwak and Ryong Ryoo Site selective line broadening in magic angle spinning 29Si NMR of CuX zeolite J. Phys. Chem. 97, 11154-11156 (1993).
28. M. Boudart, R. Ryoo, G. P. Valenç and R. Van Grieken Chemisorption of H2 on supported Pt clusters probed by 129Xe NMR Catal. Lett. 17, 273-283 (1993).
27. Ryong Ryoo, Louis-Charles de Ménorval, Ja Hun Kwak and François Figueras 129Xe NMR spectrum of xenon in the α-cage of zeolite A during hydration and ion exchange J. Phys. Chem. 97, 4124-4127 (1993).
26. Ryong Ryoo, Chanho Pak and Sung June Cho EXAFS and catalytic activity of AgPt bimetallic cluster supported on NaY zeolite Jpn. J. Appl. Phys. 32, 475-477 (1993).
25. Chanho Pak and Ryong Ryoo Study of xenon adsorption on alkaline-earth cation in Y zeolite based on chemical shift in 129Xe NMR spectrum J. Korean Chem. Soc. 36, 351-359 (1992).
24. Sung June Cho, Seong Moon Jung, Yong Gun Shul and Ryong Ryoo Formation and growth of a Ru cluster in a Y zeolite supercage probed by 129Xe NMR spectroscopy and xenon adsorption measurements J. Phys. Chem. 96, 9922-9927 (1992).
23. O Bong Yang, Seong Ihl Woo and Ryong Ryoo Formation of small Pt-Ir bimetallic clusters in NaY zeolite probed with 129Xe NMR spectroscopy and ethane hydrogenolysis J. Catal. 137, 357-367 (1992).
22. Wee-Kyeong Kang, Sung June Cho, Minyung Lee, Dong-Ho Kim, Ryong Ryoo, Kyung-Hoon Jung and Du-Jeon Jang Excited state intramolecular proton transfer and physical properties of 7-hydroxyquinoline Bull. Korean Chem. Soc. 13, 140-145 (1992).
21. D. H. Ahn, J. S. Lee, M. Nomura, W. M. H. Sachtler, G. Moretti, S. I. Woo and R. Ryoo Characterization of zeolite-supported Pt-Cu bimetallic catalyst by xenon-129 NMR and EXAFS J. Catal. 133, 191-201 (1992).
20. Ryong Ryoo, Sung June Cho, Chanho Pak, Jeong-Guk Kim, Son-Ki Ihm and Jeong Yong Lee Application of the xenon-adsorption method for the study of metal cluster formation and growth on Y zeolite J. Am. Chem. Soc. 114, 76-82 (1992).
19. Jeong-Guk Kim, Son-Ki Ihm, Jeong Yong Lee and Ryong Ryoo Formation of a small palladium cluster by anchoring on a multivalent cation in a zeolite supercage studied by xenon adsorption J. Phys. Chem. 95, 8546-8552 (1991).
18. Dong Jin Suh, Tae-Jin Park, Son-Ki Ihm and Ryong Ryoo 129Xe NMR spectroscopy of xenon gas adsorbed on amorphous carbons J. Phys. Chem. 95, 3767-3771 (1991).
17. B. F. Chmelka, J. G. Pearson, S.-B. Liu, R. Ryoo, L.-C. de Ménorval and A. Pines NMR study of the distribution of aromatic molecules in NaY zeolite J. Phys. Chem. 95, 303-310 (1991).
16. Jung-Ki Park, Byung-Kyu Park and Ryong Ryoo Critical ion concentrations for clusters in sodium sulfonated polystyrene ionomers Polym. Eng. Sci. 31, 873-878 (1991).
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