
Keywords: BD، 1،3-بوتادین; BA, n-butane; BD, 1,3-butadiene; cBE, cis 2-butene; CR, crossover constant; DE, differential evolution; F, scaling factor; HP, high pressure; H2G, gas phase hydrogen; IB, isobutene; IBA, isobutane; LPG, liquefied petroleum gas; NP, number of populations;