活性炭是一种具有丰富空隙结构和巨大比表面积的碳质吸附材料。远影活性炭具有吸附能力强、化学稳定性好、机械强度高，方便再生等特点，被广泛应用于工业、农 业、国防、交通、医药卫生、环境保护等领域。根据用户要求不同采用不同的生产方法，例如化学法，物理法，化学--物理法或者物理--化学法。

空气净化活性炭，具有比表面积大、孔隙结构发达、吸附能力强、机械强度高、易再生等优点。能有效吸附空气中的甲醛、氨、氡、苯、二甲苯、香烟、油烟等有害气体及各种异味，尤其是致癌的芳香类物质。广泛应用于二氧化碳气体、氢气、氮气、氯化氢、乙炔、乙烯、裂化气、惰性气体等的净化；原子设施的净化；防毒面具、滤毒器材的充填；脱降空气中污染物以及混合气体的分类提纯。

活性炭重要用途之一是作催化剂载体和助催化剂，也可直接用作催化剂。载体活性炭，是指催化剂负载在活性炭表面上，活性炭只是起到载体的作用。载体主要用于支持催化剂，使其具有特定的物理化学性能，而载体本身一般并不具有催化活性。常用的载体有活性氧化铝、粘土、分子筛、活性炭、蜂窝陶瓷、氧化硅、高岭土、硅藻土等。常用“活性组分名称-载体名称”来表明负载型催化剂的组成，如加氢用的钯-活性炭催化剂、汽车尾气净化用的铂-蜂窝陶瓷催化剂。

活性炭是疏水性吸附剂，对水溶液中的有机物具有较强的吸附作用，作为城市污水与工业废水处理用的吸附剂。水处理活性炭，原料可以是椰子壳、核桃壳、杏壳、桃壳、木屑、煤质等，其中椰壳活性炭被公认为是最好的一种水处理活性炭。水处理的活性炭有粉状、颗粒状和柱状，其中颗粒状应用最广。活性炭的粒度越小吸附速度越快，但水头损失要增大，一般在8-30目较好。水处理的活性炭三项要求：吸附容量大、吸附速度快、机械强度好。除此之外，远影活性炭还具有比表面积大、孔隙结构发达、不易脱粉、阻力小、化学性能稳定，净化度高、使用寿命长、易再生等特点。

Activated Carbon is made of wood, coal or coconut shell, granular or cylindrical appearance. For air purification, the best is coconut shell. Yuanying activated carbon has big specific surface area, abundant pore structure, high mechanical strength, strong adsorption capacity, easy regeneration.

Activated Carbon apertures pide into macropore (radius 1000-1000000 A), transition hole (radius 20-1000A), micropore (radius -20A). Air purification activated carbon mainly has micropore, its apertures must be a little big than harmful gas, specific surface area and pore volume bigger is better, these are very beneficial to adsorb harmful gas.

The raw materials of water treatment activated carbon have coconut shells, walnut shell, apricot, peach shell, wood, coal and so on, the coconut shell activated carbon is considered the best water treatment activated carbon. Water treatment activated carbon has powder, granule and columnar, among them granule is the most widely used. The smaller granularity, the faster absorption, but head loss increases, usually in 8-30 mesh is better.

One of important application of Activated Carbon is as catalyst support and promoter, also can be directly as catalyst. As a support, mainly used to support catalyst, lets catalyst load on its surface and makes it possess certain physical and chemical property, support itself generally does not have catalytic activity. Common supports include activated alumina, activated carbon, molecular sieve, clay, honeycomb ceramics, monox, kaolin, diatomite, etc. Usually used “active component-support name” to indicate supported catalyst composition, for example, Pd-activated carbon catalyst for hydrogenation, Pt-honeycomb ceramics catalyst for automotive exhaust purification.