Abstract
The catalytic transformation of camphene over AlPO4-5, AlPO4-11, SAPO-5, SAPO-11, VAPO-5, VAPO-11, CoAPO-5, CoAPO-11, NAPO-5, NAPO-11, ZAPO-5 and ZAPO-11 in the vapour phase has been studied. The products formed are tricyclene, bornylene and monocyclic terpenes. The product distribution is influenced by both acidity and inverse weight hourly space velocity (WHSV)–1. Selective formation of tricyclene is envisaged over weak acid sites and with lower (WHSV)–1, while the monocylics like dipentene, terpinolene, α- and τ-terpinenes, p-menthene and p-cymene are formed over strong acid sites. The effect of temperature on conversion and product distribution, and the effect of acidity and (WHSV)–1 on the distribution of monocyclics have also been investigated.
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