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Because of the low cost, high activity, and high compatibility, nickel-based catalysts have become the preferred choice for low-temperature carbon dioxide methanation. used the sol-gel method to make MgO, CaO, SrO, and BaO modified nickel-based methanation catalysts that significantly improved CO 2 hydrogenation catalytic activity.

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Coltan is also used to make high-temperature alloys for jet engines, air-based turbines, and land-based turbines. More recently, in the late s, the nickel-tantalum super-alloys used in jet engines account for 15% of tantalum consumption, but pending orders for the Airbus and the Dreamliner may increase this proportion, as well as China.