Low temperature adsorption performance of methane on the high-surface carbon adsorbent

When liquefied natural gas vehicles (LNGV) is used for city cars, due to the lay-off at night or a long time outage, evaporation of LNG in the tank could force the safety valve of the fuel storage system opening so as to release natural gas, which increases security environment risk of LNGV. Combined with the main characteristic of LNGV fuel storage system, methane adsorption performance on high surface area carbon adsorbent (SYJ-2) was researched under the low temperature and low pressure. The results showed that methane adsorption capacity by the adsorbent is 0.16~0.3 g/g, namely 82~153 ml/ml, on the condition of 238~161K and 1.5 MPa. Adsorbed natural gas (ANG) could be used for LNGV fuel storage system so as to improve its safety.