Gas diffusion electrode and application to catalyzed electrochemical processes
    1.
    发明授权
    Gas diffusion electrode and application to catalyzed electrochemical processes 失效
    气体扩散电极和催化电化学过程的应用

    公开(公告)号:US06444347B1

    公开(公告)日:2002-09-03

    申请号:US09623206

    申请日:2000-08-29

    IPC分类号: H01M486

    摘要: A gas diffusion electrode comprises a cloth (12) of activated carbon fibers having a first face coated in a hydrophobic material (14) and a second face on which particles of catalyst (16) are fixed directly and are dispersed in substantially uniform manner over the fibers. The electrode can be used in an electrochemical cell of a proton exchange membrane fuel-cell battery, or in an electrochemical reactor, e.g. for making chlorine and caustic soda.

    摘要翻译: 气体扩散电极包括具有涂覆在疏水材料(14)中的第一面的活性碳纤维布(12)和其上直接固定催化剂(16)的颗粒并且基本均匀地分散在其上的第二面 纤维。 该电极可用于质子交换膜燃料电池电池的电化学电池,或电化学反应器中。 用于制造氯和苛性钠。

    Method of making an activated fabric of carbon fibers
    2.
    发明授权
    Method of making an activated fabric of carbon fibers 有权
    制造碳纤维活化织物的方法

    公开(公告)号:US6120841A

    公开(公告)日:2000-09-19

    申请号:US381060

    申请日:1999-09-13

    CPC分类号: D01F9/22 D01F9/14 D01F9/16

    摘要: A fabric made of fibers of a carbon-precursor cellulose material is impregnated with a composition containing at least one inorganic ingredient having a function of promoting dehydration of cellulose, and the fabric is subjected to heat treatment. This treatment consists in raising temperature at a speed lying in the range 1.degree. C./min to 15.degree. C./min followed by keeping the temperature constant in the range 350.degree. C. to 500.degree. C., and it is followed by a step of washing the fabric. This produces directly an activated fabric of carbon fibers having a specific surface area of not less than 600 m.sup.2 /g, without subsequent activation treatment at a higher temperature.

    摘要翻译: PCT No.PCT / FR98 / 00504 Sec。 371日期1999年9月13日 102(e)1999年9月13日PCT PCT。1998年3月12日PCT公布。 公开号WO98 / 41678 1998年9月24日由碳前体纤维素材料的纤维制成的织物用含有至少一种具有促进纤维素脱水功能的无机成分的组合物浸渍,对该织物进行热处理。 这种处理是以1℃/分钟至15℃/分钟的速度升温,然后将温度保持在350℃至500℃的范围内,然后是 洗涤织物的一个步骤。 这直接产生具有不小于600m 2 / g的比表面积的活性碳纤维织物,而不需要在较高温度下进行后续活化处理。

    Carbon fiber electrode for a secondary cell
    3.
    发明授权
    Carbon fiber electrode for a secondary cell 失效
    用于二次电池的碳纤维电极

    公开(公告)号:US06361900B1

    公开(公告)日:2002-03-26

    申请号:US09555499

    申请日:2000-06-01

    IPC分类号: H01M458

    摘要: The carbon fibers present a mean lattice surface spacing (d002) not less than 0.36 nm, preferably 0.38 nm, at a crystallite size such that the mean height (Lc) lies in the range 0.7 nm to 0.3 nm and the mean width (La) lies in the range 2 nm to 6 nm, and it presents total porosity lying in the range 10% to 30%. The electrode is preferably a rayon-precursor carbon cloth and it constitutes the anode (10) of a secondary cell having a cathode (20) which includes lithium enabling lithium ions to be inserted and de-inserted, and an electrolyte (30).

    摘要翻译: 碳纤维的平均晶格表面间距(d002)不小于0.36nm,优选为0.38nm,晶粒尺寸使得平均高度(Lc)在0.7nm至0.3nm的范围内,平均宽度(La) 位于2nm至6nm的范围内,并且其总孔隙率在10%至30%的范围内。 电极优选为人造丝前体碳布,并且构成具有阴极(20)的二次电池的阳极(10),所述阴极包括使锂离子插入和取出的锂,以及电解质(30)。

    Preparation of a catalyst support in activated carbon fibres
    6.
    发明授权
    Preparation of a catalyst support in activated carbon fibres 失效
    活性炭纤维中催化剂载体的制备

    公开(公告)号:US06383972B1

    公开(公告)日:2002-05-07

    申请号:US09555037

    申请日:2000-05-23

    IPC分类号: B01J2118

    摘要: A carbon fiber fabric having large specific surface area is made using a rayon precursor, and a catalyst is fixed on the fabric by impregnation or by cationic exchange. The carbon fiber fabric has pores with a mean size lying in the range 0.3 nm to 3 nm, a carbon content greater than 99%, and a high density of functional groups per unit area which favors the dispersion of metal catalyst in the form of fine particles and which is good for highly selective catalytic reactions in fine chemistry.

    摘要翻译: 使用人造丝前体制造具有大比表面积的碳纤维织物,并通过浸渍或阳离子交换将催化剂固定在织物上。 碳纤维织物具有平均尺寸在0.3nm至3nm的范围内,碳含量大于99%的孔,并且每单位面积的高官能团密度有利于金属催化剂以精细形式的分散 颗粒,对精细化学中的高选择性催化反应有好处。

    Method for activating a woven or non-woven textile sheet of continuous
carbonized filaments or spun carbonized yarn
    7.
    发明授权
    Method for activating a woven or non-woven textile sheet of continuous carbonized filaments or spun carbonized yarn 失效
    激活连续碳化丝或纺织碳化纱的织造或非织造织物片的方法

    公开(公告)号:US5928986A

    公开(公告)日:1999-07-27

    申请号:US751053

    申请日:1996-11-15

    摘要: A method of activating a fiber sheet comprising carbonized filaments or spun carbonized yarn includes causing the sheet to travel horizontally through a furnace including at least one horizontal heat treatment zone in which there is maintained a regular and uniform temperature lying in the range of 800.degree. C. to 1000.degree. C. at a linear speed lying in the range 1 to 5 cm/min. over the length of the heat treatment zone and maintaining at least in the zone a constant flow of an oxidizing gaseous fluid that is uniformly distributed therein and at a pressure close to atmospheric pressure. A temperature-raising zone and a temperature-lowering zone are located at opposite ends of the treatment zone relative to the travel direction of the sheet and inlet and outlet sections of the treatment zone are fitted with air locks having cooling and suction systems.

    摘要翻译: 一种活化包含碳化丝或纺丝碳纤维的纤维片的方法包括使片材水平地穿过包括至少一个水平热处理区域的炉子,其中保持在800℃范围内的规则均匀的温度 至1000℃,线速度为1〜5cm / min。 在热处理区的长度上并且至少在该区域中保持均匀分布在其中且在接近大气压的压力下的恒定的氧化性气态流体流。 升温区域和降温区域位于处理区域的相对于片材的行进方向的相对端处,并且处理区域的入口和出口部分装配有具有冷却和抽吸系统的气闸。