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In a typical experiment, a sample of 300 mg dry, activated A and 500 mg B were placed in a two-chamber-tube separated by a glass frit and were kept at 300C in a 5 mbar (diffusion pump) static/dynamic vacuum for 12h. Çë½Ì¸÷룬Õâ¶Î»°¸ÃÔõô·Òë£¬ÌØ±ðµØ£¬ºìÉ«±ê¼ÇµÄÄÇÁ½¸ö´Ê£¬ÎÒ²»¶®Äǵ½µ×ÊÇʲô¶«Î÷£¿¶àлÁË£¡ A sample of 300 mg C was placed in a steel autoclave (Parr) and was reduced in a hydrogen atmosphere (100 bar, 100 oC) for 1 d and yielded a black powder. »¹ÓÐÕâ¾ä»°£¬ÇëÎÊÕâ¸ö¹ý³ÌÈÝÒ××öµ½Ã´£¿ÔõôʵÏÖÄØ£¿ÖÔÐÄÇë½Ì¸÷λ´óÏÀ£¬Ð»Ð»£¡ [ Last edited by hljiang on 2008-9-20 at 18:20 ] |
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redwang8181
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2Â¥2008-09-25 10:28:10
hljiang
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3Â¥2008-09-25 21:50:40
cariyas
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4Â¥2008-09-27 22:07:19














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