Publications from 1991 to 2000:
- Q. Xu,* M. Fujiwara, M. Tanaka, Y. Souma, “Hexacarbonyldiplatinum(I) Cation-Catalyzed Carbonylation of Olefins in Concentrated Sulfuric Acid”, J. Org. Chem., 65(23), 8105-8107 (2000).
- M. Fujiwara,* K. Kuraoka, T. Yazawa, Q. Xu, M. Tanaka, Y. Souma, “Preparation of an MCM-41/Nafion® composite material; a selective catalyst for a-methylstyrene dimerization”, J. Chem. Soc., Chem. Commun., 1523-1524 (2000).
- Q. Xu,* B. T. Heaton, C. Jacob, K. Mogi, Y. Ichihashi, Y. Souma, K. Kanamori, T. Eguchi, “Hexacarbonyldiplatinum(I). Synthesis, Spectroscopy and Density Functional Calculation of the First Homoleptic, Dinuclear Platinum(I) Carbonyl Cation, [{Pt(CO)3}2]2+, Formed in Concentrated Sulfuric Acid”, J. Am. Chem. Soc., 122(29), 6862-6870 (2000).
- Q. Xu,* S. Inoue, Y. Souma, H. Nakatani, “Formation of M(CO)4+ (M = Co, Rh) by Dissolution of Neutral Co and Rh Carbonyl Clusters in Strong Acids under CO Atmosphere”, J. Organometal. Chem., 606, 147-150 (2000).
- M. Tanaka,* E. Muro, H. Ando, Q. Xu, M. Fujiwara, Y. Souma, Y. Yamaguchi, “NO2+ Nitration Mechanism of Aromatic Compounds: Electrophilic vs Charge-Transfer Process”, J. Org. Chem., 65, 2972-2978 (2000).
- Q. Xu,* H. Nakatani, Y. Souma, “A New Rhodium Catalyst: Formation of [Rh(CO)4]+ in Concentrated Sulfuric Acid and its Application to Carbonylation of Olefins”, J. Org. Chem., 65(5), 1540-1543 (2000).
- H. Mori, A. Wada, Q. Xu, Y. Souma,* “Novel Application of a Solid Super Acid, Sulfates Zirconia, as a Catalyst for Koch Carbonylation Reaction”, Chem. Lett., (2) 136-137 (2000).
- Q. Xu,* Y. Souma, B. T. Heaton,* C. Jacob, K. Kanamori, “[{Pt(CO)3}2]2+: The First Homoleptic, Dinuclear, Cationic Platinum(I) Carbonyl Complex Formed in Concentrated Sulfuric Acid”, Angew. Chem., Int. Ed. Engl., 39(1), 208-209 (2000).
- Y. Tan, M. Fujiwara,* H. Ando, Q. Xu, Y. Souma, “Synthesis of iso-Butane and Branched Hydrocarbons from Carbon Dioxide and Hydrogen over Composite Catalysts”, Ind. Eng. Chem. Res., 38, 3225-3229 (1999).
- Q. Xu,* Y. Souma, J. Umezawa, M. Tanaka, H. Nakatani, “Palladium(I) Carbonyl Cation-Catalyzed Carbonylation of Olefins and Alcohols in Concentrated Sulfuric Acid”, J. Org. Chem., 64 (17), 6306-6311 (1999).
- M. Fujiwara,* Q. Xu, Y. Souma, T. Kobayashi, “Oxidation of alkanes by TBHP in the presence of soluble titanium complexes”, J. Mol. Catal. A, 142, 77-84 (1999).
- Q. Xu,* D. He, M. Fujiwara, M. Tanaka, Y. Souma, H. Yamanaka, “Hydrogenation of carbon dioxide over Fe-Cu-Na/zeolite composite catalysts: Na migration via solid-solid reaction and its effects on the catalytic activity”, J. Mol. Catal. A, 136, 161-168 (1998).
- H. Ando,* Q. Xu, M. Fujiwara, Y. Matsumura, M. Tanaka, Y. Souma, “Hydrocarbon synthesis from CO2 over Fe-Cu catalysts”, Catal. Today, 45, 229-234 (1998).
- M. Tanaka,* M. Fujiwara, Q. Xu, H. Ando, T. J. Raeker, “Influence of Conformation and Proton Transfer Dynamics in the Dibenzyl σ-Complex on Regioselectivity in Gattermann-Koch Formylation via Intracomplex Reaction”, J. Org. Chem., 63, 4408-4412 (1998).
- Q. Xu and Y. Souma, “Metal Carbonyl Cations in Strong Acids and their Catalytic Activities”, Top. Catal., 6(1-4), 17-26 (1998).
- Y. Souma, M. Fujiwara, R. Kieffer, H. Ando, Q. Xu, “Hydrocarbon Synthesis from CO2 over Composite Catalysts”, Stud. Surf. Sci. Catal., 114, 327-332 (1998).
- Y. Tan, M. Fujiwara, H. Ando, Q. Xu, Y. Souma, “Selective Formation of iso-Butane from Carbon Dioxide and Hydrogen over Composite Catalysts”, Stud. Surf. Sci. Catal., 114, 435-438 (1998).
- Q. Xu,* D. He, M. Fujiwara, M. Tanaka, Y. Matsumura, Y. Souma, H. Ando, H. Yamanaka, “Hydrogenation of Carbon Dioxide over Fe-Cu-Na/zeolite Composite Catalysts”, Stud. Surf. Sci. Catal., 114, 423-426 (1998).
- M. Tanaka,* M. Fujiwara, Q. Xu, Y. Souma, H. Ando, K. K. Laali,* “Evidence for the Intracomplex Reaction in Gattermann-Koch Formylation in Superacids: Kinetic and Regioselectivity Studies”, J. Am. Chem. Soc., 119, 5100-5105 (1997).
- M. Fujiwara,* R. Kieffer, H. Ando, Q. Xu, Y. Souma, “Change of Catalytic Properties of Fe-ZnO/zeolite Composite Catalyst in the Hydrogenation of Carbon Dioxide”, Appl. Catal. A, 154, 87-101 (1997).
- Q. Xu,* D. He, M. Fujiwara, Y. Souma, “Improved Activity of Fe-Cu Catalysts by Physical Mixing with Zeolites for the Hydrogenation of Carbon Dioxide”, J. Mol. Catal. A, 120, L23-L26 (1997).
- Q. Xu,* Y. Imamura, M. Fujiwara, Y. Souma,* “A New Gold Catalyst: Formation of Gold(I) Carbonyl, [Au(CO)n]+ (n = 1, 2), in Sulfuric Acid and Its Application to Carbonylation of Olefins”, J. Org. Chem., 62(6), 1594-1598 (1997).
- Q. Xu, T. Eguchi,* H. Nakayama, N. Nakamura, “Site Selectivity of Argon/Methane Co-adsorbed in Mordenite as Studied by NMR”, J. Chem. Soc. Faraday Trans., 92, 4601-4603 (1996).
- Q. Xu, T. Eguchi,* H. Nakayama, N. Nakamura, “Proton magnetic resonance of CnH2n+2 (n = 1-4) Adsorbed in Mordenite - Dynamic behaviour and host-guest interaction”, J. Chem. Soc. Faraday Trans., 92, 1039-1042 (1996).
- Q. Xu, T. Eguchi,* H. Nakayama, N. Nakamura, “Site Selectivity of Methane Adsorbed in Mordenite as Studied by NMR”, J. Chem. Soc. Faraday Trans., 91, 2949-2953 (1995).
- Q. Xu, T. Eguchi,* H. Nakayama, “Molecular Motions in Solid CD3NH3PbBr3 as Studied by 1H NMR”, Bull. Chem. Soc. Jpn., 65, 2264-2266 (1992).
- Q. Xu, T. Eguchi,* H. Nakayama, N. Nakamura, M. Kishita, “Molecular Motions and Phase Transitions in Solid CH3NH3PbX3 (X = Cl, Br, I) as Studied by NMR and NQR”, Z. Naturforsch., A, 46, 240-246 (1991).