Pure phases of ZAPO-5 and MnAPO-5 were synthesised hydrothermally using triethylamine as a structure directing agent. The estimation of acid sites (Bronsted and Lewis) in ZAPO-5 and MnAPO-5 was done by TPD measurements of n-butylamine. The alkylation of ethylbenzene (EB) with 2-propanol over the catalysts was studied in a fixed-bed reactor at atmospheric pressure and 250-400 degreesC. p-Isopropyl ethylbenzene (p-IPEB) and m-isopropyl ethylbenzene (m-IPEB) were the products formed. MnAPO-5 was found to be more active than ZAPO-5. MnAPO-5 registered 11% yield of p-IPEB and 5.8% yield of m-IPEB at 350 degreesC.