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°®ÓëÓêÏÂ(½ð±Ò-1): ÇëÎðÔÚÇóÖúÄÚÈݰæ¿é¹àË®£¡ 2012-02-21 19:39:06
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2Â¥2012-02-19 23:27:45
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°®ÓëÓêÏÂ(½ð±Ò-1): 2012-02-21 19:39:18
°®ÓëÓêÏÂ(Î¥¹æ´æµµ): 2012-02-21 19:39:35
°®ÓëÓêÏÂ(½ð±Ò+2): 2012-02-21 19:39:48
°®ÓëÓêÏÂ: ¹ã¸æ£¬Ï´ÎÇëÎðÔÙʹÓ㬷ñÔòÆÁ±Î 2012-02-21 19:41:04
°®ÓëÓêÏÂ:±à¼ÄÚÈÝ 2012-02-21 19:41
ºö±ØÁÒ(½ð±Ò+30, ·ÒëEPI+1): ¡ïÓаïÖú 16 2012-02-21 23:06:26
°®ÓëÓêÏÂ(Î¥¹æ´æµµ): 2012-02-21 19:39:35
°®ÓëÓêÏÂ(½ð±Ò+2): 2012-02-21 19:39:48
°®ÓëÓêÏÂ: ¹ã¸æ£¬Ï´ÎÇëÎðÔÙʹÓ㬷ñÔòÆÁ±Î 2012-02-21 19:41:04
°®ÓëÓêÏÂ:±à¼ÄÚÈÝ 2012-02-21 19:41
ºö±ØÁÒ(½ð±Ò+30, ·ÒëEPI+1): ¡ïÓаïÖú 16 2012-02-21 23:06:26
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Regarding the nondegradable feature of straw lignin, the paper studies the dynamic properties of fractionational separation of wheat stalk in propionic acid under an ultrasonic field. By means of machinery analysis such as elementary analysis, gel chromatographic analysis, FTIR spectroscope, Nuclear Magnetic Resonance (NMR), GC/MS, etc, the study compares the structure change of wheat stalk before and after the procedure and draws conclusions on the chemical reaction mechanism of the applied methodology. At the same time, with wheat stalk being the object, and propionic acid being the solvent, to boil the wheat stalk and observe the reaction process of wheat stalk in propionic acid, and analyze its chemical kinetics and thermodynamics. Through the above stated research, the paper explores the reaction mechanism of processing wheat stalk by using propionic acid, and provides theoretical support to fractionational separation of lignin. [ Last edited by °®ÓëÓêÏ on 2012-2-21 at 19:41 ] |

3Â¥2012-02-21 17:10:53









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