Cho phản ứng: 2CH4 -> X + 3H2. Chất X có têN

Cho phản ứng: \text{2}\text{C}{\text{H}}_{\text{4}}\stackrel{\text{1}\text{5}\text{0}{\text{0}}^o\text{C}\text{,}\text{L}\text{µ}\text{m}\text{l}\text{¹}\text{n}\text{h}\text{n}\text{h}\text{a}\text{n}\text{h}}{\to }X\text{+}\text{3}{\text{H}}_{\text{2}}. Chất X có tên: