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cellpadding="0" cellspacing="0"> <tr> <td width="773" valign="top"> <table width="768" border="0" align="left" cellpadding="0" cellspacing="0"> <tr> <td><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="27" valign="top" background="images/h.jpg" class="white12"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="4"></td> </tr> <tr> <td valign="top"> <span class="white12">新型燃料典型产品与工程</span></td> </tr> </table></td> </tr> </table></td> </tr> <tr> <td valign="top"><table width="100%" border="0" cellpadding="0" cellspacing="1" bgcolor="D10000"> <tr> <td height="205" valign="top" bgcolor="#FFFFFF"> <table width="100%" height="637" border="0" cellpadding="0" cellspacing="3"> <tr> <td valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="8"></td> </tr> </table> <table width="97%" border="0" align="center" cellpadding="0" cellspacing="10" bgcolor="#FAFAFA"> <tr> <td><table width="100%" border="0" align="center" cellpadding="0" cellspacing="0" > <tr align="center" bgcolor="#E6FFE6" class="a1"> <td height="25" bgcolor="#EEEEEE" class="r13"><strong> 日开发出新型燃料电池催化剂 </strong></td> </tr> </table> <table width="100%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td> </td> </tr> <tr> <td background="images/dian.jpg" height="1"></td> </tr> <tr> <td height="30" align="right" class="12b"><span class="r">发布时间：2008-3-31 16:32:06 </span> </td> </tr> </table> <table width="98%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td><span class="12b"> </span><span class="12b1"> <P> 日本广岛科学技术研究所开发出一种新型催化剂，可使损伤燃料电池电极的一氧化碳与氢发生反应，从而消除一氧化碳对电极的损伤。 <BR> <BR> 新型催化剂是二氧化钛上面附着的数微米大米的金属钌粒子，在摄氏250度的温度下使一氧化碳与氢发生反应形成甲烷气体。即使混合气体在二氧化碳浓度高于一氧化碳20倍的情况下也可消除一氧化碳。该研究所的试验证明，使用相对廉价的镍代替钌，在摄氏300度的温度下消除一氧化碳的效果也令人满意，并且可以降低制造成本。 <BR><BR> 燃料电池在工作时，一氧化碳的量通常不得高于20ppm。该研究所开发的新型催化剂用40毫克的量在1分钟之内便可除去100毫升混合气体中的一氧化碳。试验证明，新型催化剂可保持长时间稳定工作。由于燃料电池使用的是甲烷中产生的氢，在消除一氧化碳时不需要外部供应气体。新型催化剂在消除甲烷分解时产生的一氧化碳的同时，又能有效产生燃料电池用氢气。 <BR><BR> 使用钌作催化剂，当温度达到摄氏280度时，二氧化碳会同时发生反应。这个问题待今后解决。目前该研究所正在加紧对这种催化剂加以改良以便在更大范围的温度下使用。 <BR> 来源：科技日报</P><br> </span><span class="12b1"> </span> </td> </tr> </table></td> </tr> </table> <table width="97%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td height="10"></td> </tr> <tr> <td height="25" bgcolor="#F6F6F6"> <div align="right"><a href=javascript:window.opener=null;window.close() class="a3">[关闭本页] </a></div></td> </tr> <tr> <td height="10"></td> </tr> </table></td> </tr> </table></td> </tr> </table></td> </tr> </table> </td> <td width="230" valign="top"><link href="css.css" rel="stylesheet" type="text/css"> <table width="230" border="0" cellspacing="0" cellpadding="0"> <tr> <td><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td><img src="images/qyfs_01.jpg" width="27" 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