The catalytic activities of beta-type microporous zeolites and their modified micro-mesoporous forms, with similar acid properties and differing in the characteristics of the porous structure, in reaction of conversion of acyclic monoterpene alcohol geraniol (C10H18O) was studied. It was established using the GC/MS method that the dehydration, isomerization and cyclization reactions occur by the catalytic conversion of geraniol in a liquid phase in atmosphere of nitrogen or argon at 27-150˚C. Geraniol catalytic converting products contained mainly terpene hydrocarbons C10H16, linalool and nerol (C10H18O), sesquiterpene alcohols: C14H24O, (2E,6E)-6,11- Dimethyl- 2,6,10-dodecatrien-1-ol and C15H26O, trans, trans-Farnesol, (2E,6E)-3,7,11-Trimethyl-2,6,10-dodecatrien-1-ol; stereoisomers are probably synthesized in chiral pore intersections of beta zeolites by the stereocontrolled synthesis. Some correlations between catalytic properties of micro-and micro-mesoporous beta-type zeolites, their textural and acid characteristics are shown. Over beta-type micro- and micro-mesoporous zeolites BEA-150 with nSiO2/ nAl2O3=150 and RBEA-150 with nSiO2/ nAl2O3=176.4, respectively geraniol converted into the terpene alcohols C14H24O with the maximum selectivity of 50-52% and to C15H26O with about 33% and 27% selectivity on this catalysts, respectively. The yields of isomerization products of geraniol in linalool and nerol were low (3-12 %)
