| 查看: 347 | 回复: 1 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
ankang276金虫 (正式写手)
|
[求助]
求一段翻译
|
|
|
Carburization of the calcined catalyst precursor was done in a quartz U-tube reactor (i.d.=7 mm) by temperature programmed reaction in a 100 ml (STP)/min of 20%CH4/ 80%H2 (UHP) and a ramp rate of 5 °C/min up to 700 °C. The catalyst was held at 700 °C for 4 h and then the gas was switched to H2 (UHP) to remove excess carbon by holding at 700 °C for a further 2 h before cooling to room temperature. Finally, the catalysts were passivated at room temperature in a 1% O2 in He stream (150 ml (STP)/min) before exposure to air. The resulting MgO-Mo2C/HY and K2O-Mo2C/HY catalysts were subsequently characterized and tested as described below. |
回复此楼
slz146
木虫 (正式写手)
- 翻译EPI: 75
- 应助: 0 (幼儿园)
- 贵宾: 0.055
- 金币: 1657.8
- 散金: 966
- 红花: 7
- 帖子: 713
- 在线: 225.5小时
- 虫号: 1097156
- 注册: 2010-09-13
【答案】应助回帖
★
sltmac(金币+1): 好就没来了嘛~ 2011-08-08 17:38:33
ankang276(金币+40, 翻译EPI+1): 2011-08-08 19:27:50
sltmac(金币+1): 好就没来了嘛~ 2011-08-08 17:38:33
ankang276(金币+40, 翻译EPI+1): 2011-08-08 19:27:50
| 在一石英U形管反应器(i.d.=7 mm)中，气体组成为20%CH4/80%H2 (UHP)，气体流率为100 ml (STP)/min ，通过程序升温以5 °C/min 的速率升温至700 °C，来对所需煅烧的催化剂前躯体进行碳化处理。催化剂在700 °C时保温4h，然后气体转换为H2 (UHP)并在700 °C进一步保温2h以清除多余的碳，再冷却至室温。最后，在暴露在空气中之前，催化剂在室温下，和含有1% O2He气氛围(150 ml (STP)/min)下钝化。所得到的MgO-Mo2C/HY 和K2O-Mo2C/HY催化剂随后按一下所描述的步骤进行表征和测试。 |
2楼2011-08-08 15:54:34
