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[求助]
BDO的历史
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有谁知道1,4-丁二醇的发展历史？它从何时开始，如何发展的等等，有知道的哥们给点信息，最好能给出工业化之前的一些发展情况介绍 ； |
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【答案】应助回帖
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一木挡风(金币+10): 缺乏REPPE以前的历史说明，以后的进展很多文章都有介绍 2011-08-30 14:26:01
blueboy(金币+2, FC-EPI+1): 辛苦了 2011-08-31 23:57:29
一木挡风(金币+10): 缺乏REPPE以前的历史说明，以后的进展很多文章都有介绍 2011-08-30 14:26:01
blueboy(金币+2, FC-EPI+1): 辛苦了 2011-08-31 23:57:29
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1,4- 丁二醇( 简称BDO) 是一种重要的有机和精细化工原料, 它被广 泛应用于医药、化工、纺织、造纸、汽车和日用化工等领域。由BDO 可以生产四氢呋喃( THF) 、聚对苯二甲酸丁二醇酯( PBT) 、γ- 丁内脂( GBL) 和聚氨酯树脂( PU Resin) 、涂料和增塑剂等,以及作为溶剂和电镀行业的增亮剂等。 1,4丁二醇是一种重要的有机化工和精细化工原料，是生产聚对苯二甲酸丁二醇酯(PBT)工程塑料和PBT纤维的基本原料；PBT塑料是最有发展前途的五大工程塑料之一。 1,4丁二醇是生产四氢呋喃的主要原料，四氢呋喃是重要的有机溶剂，聚合后得到的聚四亚甲基乙二醇醚(PTMEG)是生产高弹性氨纶(莱卡纤维)的基本原料。氨纶主要用于生产高级运动服、游泳衣等高弹性针织品。 1,4丁二醇的下游产品γ-丁内酯是生产2-吡咯烷酮和N-甲基吡咯烷酮产品的原料,由此而衍生出乙烯基吡咯烷酮、聚乙烯基吡咯烷酮等一系列高附加值产品，广泛用于农药、医药和化妆品等领域。 发展历史： In its industrial synthesis, acetylene reacts with two equivalents of formaldehyde to form 1,4-butynediol, also known as but-2-yne-1,4-diol. This type of acetylene-based process is illustrative of what is known as "Reppe chemistry", after German chemist Walter Reppe. Hydrogenation of 1,4-butynediol gives 1,4-butanediol. LyondellBasell manufactures 1,4-butanediol in a proprietary, multi-step process without the use of acetylene. First, propylene oxide is converted to allyl alcohol. The allyl alcohol is then hydroformylated to 4-hydroxybutyraldehyde. Hydrogenation of the 4-hydroxybutyraldehyde yields 1,4-butanediol.[4] It is also manufactured on an industrial scale from maleic anhydride, which is first converted to the methyl maleate ester, then hydrogenated. Other routes are from butadiene, allyl acetate and succinic acid[5]. Genomatica (a San Diego-based company) has genetically engineered E. coli to metabolize sugar into 1,4-butanediol. They expect to build and begin operating a pilot plant by the end of 2009. Genomatica CEO Christopher Gann said the process consumes 32,000 BTU per pound of 1,4-butanediol (75 MJ/kg), far less than the acetylene-based process, and does not have any by-products.[6][7] 工业使用： 1,4-Butanediol is used industrially as a solvent and in the manufacture of some types of plastics, elastic fibers and polyurethanes. In organic chemistry, 1,4-butanediol is used for the synthesis of γ-butyrolactone (GBL). In the presence of phosphoric acid and high temperature, it dehydrates to the important solvent tetrahydrofuran.[8] At about 200 °C in the presence of soluble ruthenium catalysts, the diol undergoes dehydrogenation to form butyrolactone.[9] World production of 1,4-butanediol is about one million metric tons per year and market price is about 2,000 USD (1,600 EUR) per ton (2005). Almost half of it is dehydrated to tetrahydrofuran to make fibers such as Spandex.[10] The largest producer is BASF.[11] |
2楼2011-08-30 09:43:31
