The present disclosure relates to microporous magnesium alkoxide and its preparation. The magnesium alkoxide of the present disclosure is characterized by mean particle size ranging from 20 to 70μ; surface area ranging from 1 to 30 m2/g; circularity ranging from 0.5 to 0.9; macro pore size distribution ranging from 40 to 80%; meso pore size distribution ranging from 15 to 60%; and micro pore size distribution ranging from 2 to 10%.