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Two series of molybdenum carbides are prepared from MoO3 by temperature programmed reduction (TPR), differing in feed gas composition (20 and 40% CH4/H2). The heating ramp consists of two steps, one from ambient temperature to 973 K, at a rate of 10 K/min; the second from 973 K up to the final temperature (1023, 1073, 1123, 1173 K), at a rate of 0.5 K/min. The Mo2C (hcp) phase is identified for the...