Journal of the Chemical Society, Dalton Transactions p. 881 - 886 (1988)
Update date:2022-08-11
Topics:
Ramis, Gianguido
Busca, Guido
Lorenzelli, Vincenzo
Ginestra, Aldo La
Galli, Paola
Massucci, Maria Antonietta
The layered pyrophosphates of quadrivalent Ti, Zr, Ge, and Sn have been prepared and characterized by Fourier-transform i.r. spectroscopy, differential thermal analysis, thermogravimetry, X-ray diffraction, and surface area measurements.Their surface acidity has been investigated by Fourier-transform i.r. spectroscopy, with an analysis of the OH streching region and of the spectra of adsorbed basic molecules (pyridine and acetonitrile), as well as by measuring their activity in acid-catalyzed reactions.The trend of surface Bronsted-acid strengths found was Ge>Sn>>Ti>Zr, corresponding to the trend in electronegativity of the elements, while theopposite trend was found for the surface Lewis-acid strengths.
View MoreZhejiang Kangfeng Chemical Co.,LTD.
Contact:+86-579-86709687
Address:Xueshizhai Industrial Zone, Weishan Town,Dongyang City, Zhejiang Province ,China
Chemvon Biotechnology Co. Ltd.
website:http://www.chemvon.com
Contact:86-21-58550039;86-21-31268550-8004
Address:Suite B-10#, 6999 Chuansha Road, Pudong District, Shanghai 201202, China
Contact:86-25-58619180
Address:Nanjing High-Tech Zone 10 Xinghuo Road Pukou District Nanjing, Jiangsu 210061 The People's Republic of China
Shanghai Boyners Pharmaceutical co., LTD.
Contact:+86-02131329586/02154581719
Address:No.328,1#315,Wuhe Road, Shanghai, ,shanghai,China (Mainland)
Contact:+(852) 301-98033
Address:Flat C, 23/F, Lucky Plaza, 315-321 Lockhart Road, Wan Chai, Hong Kong
Doi:10.1007/BF00949464
(1981)Doi:10.1080/10286020.2016.1196193
(2016)Doi:10.1016/S0020-1693(02)00686-2
(2002)Doi:10.1021/jo00398a071
(1978)Doi:10.1021/acs.organomet.6b00662
(2016)Doi:10.1246/bcsj.55.345
(1982)