“…Because of the complex composition of real tar, several researchers have studied tar decomposition reactions using biomass tar model compounds such as: anthracene [25], benzene [25][26][27][28][29][30][31], cyclohexane [32], 1-methyl-naphthalene [26,33], naphthalene [25,27,28,[34][35][36][37][38][39][40][41][42][43][44][45], n-heptane [26,[46][47][48], phenol [49], pyrene [25] and toluene [10, 11, 25-28, 31, 50-57].…”