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研究了椰壳基活性炭微孔结构和化学改性对其储氢能力的影响。结果表明,物理活化的椰壳基活性炭用HF或NH3.H2O处理后可提高活性炭的吸氢能力,用HNO3处理后吸氢能力几乎没有什么变化,而用H3PO4处理后吸氢能力却有明显的下降。活性炭的比表面积、孔径分布和表面性质都会影响其吸附氢气的能力,其中,比表面积是最主要的影响因素。
The effect of coconut shell activated carbon micropore structure and chemical modification on its hydrogen storage capacity was studied. The results showed that the physical activation of coconut shell activated carbon with HF or NH3.H2O treatment can increase the hydrogen absorption capacity of activated carbon, with HNO3 treatment little change in hydrogen absorption capacity, but after treatment with H3PO4 hydrogen absorption capacity has obvious decline. The specific surface area, pore size distribution and surface properties of activated carbon all affect the ability of hydrogen to adsorb hydrogen. Among them, the specific surface area is the most important factor.