WO2008016428-A2  BOeDDEKER, K.W. ET AL.: "Pervaporation of isomeric butanols" JOURNAL OF MEMBRANE SCIENCE, vol. 54, 1990, pages 1-12, XP002494229;  DATABASE WPI Week 198622 Thomson Scientific, London, GB; AN 1986-142052 XP002462219 & JP 61 078898 A (ANDO E) 22 April 1986 (1986-04-22);  FRITSCH, D. ET AL.: "Application of a forced-flow catalytic membrane reactor for the dimerisation of isobutene" CATALYSIS TODAY, vol. 98, no. 1-2, 2004, pages 295-308, XP004640277 ISSN: 0920-5861;  IPATIEFF, V.N. ET AL.: ""Hydro-polymerization"" J. AM. CHEM. SOC., vol. 59, 1937, pages 720-722, XP002494231;  PINES, H. ET AL.: "High pressure thermal alkylation of monoalkylbenzenes by simple olefins" J. AM. CHEM. SOC., vol. 79, no. 18, 1957, pages 4958-4967, XP002494230;  RITTER, J.J.: "A novel method for the preparation of dimethyl-neopentylcarbinol" J. AM. CHEM. SOC., vol. 70, no. 12, 1948, page 4253, XP002494232;  WILLIAMS, C. ET AL.: "Mechanistic studies of the catalytic dehydration of isobutyl alcohol on NaH-ZSM-5" JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS, ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 86, no. 20, 1990, pages 3473-3485, XP009093514 ISSN: 0956-5000WO2008016428-A3  DATABASE WPI Week 198622 Thomson Scientific, London, GB; AN 1986-142052 XP002462219 & JP 61 078898 A (ANDO E) 22 April 1986 (1986-04-22);  BOeDDEKER, K.W. ET AL.: "Pervaporation of isomeric butanols" JOURNAL OF MEMBRANE SCIENCE, vol. 54, 1990, pages 1-12, XP002494229;  WILLIAMS, C. ET AL.: "Mechanistic studies of the catalytic dehydration of isobutyl alcohol on NaH-ZSM-5" JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS, ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 86, no. 20, 1990, pages 3473-3485, XP009093514 ISSN: 0956-5000;  PINES, H. ET AL.: "High pressure thermal alkylation of monoalkylbenzenes by simple olefins" J. AM. CHEM. SOC., vol. 79, no. 18, 1957, pages 4958-4967, XP002494230;  FRITSCH, D. ET AL.: "Application of a forced-flow catalytic membrane reactor for the dimerisation of isobutene" CATALYSIS TODAY, vol. 98, no. 1-2, 2004, pages 295-308, XP004640277 ISSN: 0920-5861;  IPATIEFF, V.N. ET AL.: ""Hydro-polymerization"" J. AM. CHEM. SOC., vol. 59, 1937, pages 720-722, XP002494231;  RITTER, J.J.: "A novel method for the preparation of dimethyl-neopentylcarbinol" J. AM. CHEM. SOC., vol. 70, no. 12, 1948, page 4253, XP002494232