СH4->CH3CI->CH3-CH3->CH2 = CH2->CH3-CH2CI->C4H10

1. CH4+ Cl2= CH3Cl+ HCl ( катализатор hn, t)

2. 2СН3СI+ 2Na= CH3-CH3+ 2NaCL

3. CH3-CH3= CH2=CH2 + H2 ( катализатор Cr2O3, t)

4. CH2=CH2 + HCl= CH3-CH2Cl

5. 2CH3-CH2Cl + 2Na= C4H10 + 2NaCl