w********h
发帖数: 12367 | 1 http://pubs.acs.org/cen/coverstory/8051/8051olefin.html
December 23, 2002
Volume 80, Number 51
CENEAR 80 51 pp. 29-33
ISSN 0009-2347
OLEFIN METATHESIS: BIG-DEAL REACTION
A boon to organic synthetic chemists, olefin metathesis also promises cleaner,
cheaper, and more efficient industrial processes
A. MAUREEN ROUHI, C&EN WASHINGTON
Olefin metathesis is a popular and useful reaction. In the presence of certain
transition-metal compounds, including various metal carbenes, olefins exchange
the groups |
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h**********r
发帖数: 671 | 2 我想找个快速检测isobutene的方法。最好是颜色反应之类的。这儿有个方法。
The chemical screening method is based on the principle that ethylene
reduces palladium chloride in water containing sulfuric acid5) and
the reduced palladium is detected by colorimetry with molybdenumblue. There
were some cases in which ammoniummolybdate was reduced by an unknownreducing
gas formed by certain organisms. To prevent such an
undesirable phenomenon,the reaction mixture was covered with liquid paraffin
in which ethylene dissolves well. Olefins... 阅读全帖 |
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b*******g
发帖数: 69 | 3 你身边的塑料轮胎都是从olefin过来的，如果说所有的塑料价格都会变成现在的一半，
这一点够不够改变世界？ |
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b*******g
发帖数: 69 | 4 你身边的塑料轮胎都是从olefin过来的，如果说所有的塑料价格都会变成现在的一半，
这一点够不够改变世界？ |
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f******s
发帖数: 314 | 5 姚庆伟 教授
天津大学特聘教授 天津市特聘专家
移动电话：15xxxxxxxxxxx
办公室：022-xxxxxxxxx
Email: x*[email protected]; x**[email protected]
教育背景
l 山西医科大学，学士， 1983
l 山西大学，硕士， 1988
l 伊利诺伊大学－芝加哥分校（Chicago), 博士， 1991
l 哥伦比亚大学（New York), 博士后， 1996－1998
工作经历
l 山西医科大学，助教， 1983－1985
l 山西大学，讲师， 1988－1991
l 北伊利诺伊大学 (DeKalb), 助理教授（tenure track), 1998－2003
l 北伊利诺伊大学 (DeKalb), 副教授（tenured), 2003－2010
研究方向
l 有机合成化学，有机合成方法，过渡金属化学及催化
l 自由基化学，有机反应机理，组合化学
... 阅读全帖 |
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s*****i
发帖数: 5548 | 6 ☆─────────────────────────────────────☆
almeda (土木工程) 于 (Wed Dec 7 21:19:48 2011, 美东) 提到:
需要一张大一些的，放living room
多谢！
☆─────────────────────────────────────☆
Duracell (电池) 于 (Wed Dec 7 21:29:11 2011, 美东) 提到:
costco
☆─────────────────────────────────────☆
Lafite (Lafite) 于 (Wed Dec 7 21:31:17 2011, 美东) 提到:
以前在JCPenney买过几张地毯，不过不是在休斯敦，质量很好，最主要的是尽量别买化
纤的，纯羊毛的也不太好打理，我买的是Olefin的，摸着手感好些~ 5'X7'的比较常见~
☆─────────────────────────────────────☆
almeda (土木工程) 于 (Wed Dec 7 21:36:29 2011, ... 阅读全帖 |
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e*c
发帖数: 395 | 7 海水变油，成本3到6刀一加仑。预计8到10年后可以海试。这个成了以后是不是驱逐舰
也能靠航母加油了？
http://www.nrl.navy.mil/media/news-releases/2012/fueling-the-fl
Fueling the Fleet, Navy Looks to the Seas
09/24/2012 07:00 EDT - 117-12r
Contact: Daniel Parry, (202) 767-2541
Refueling U.S. Navy vessels, at sea and underway, is a costly endeavor in
terms of logistics, time, fiscal constraints and threats to national
security and sailors at sea.
In Fiscal Year 2011, the U.S. Navy Military Sea Lift Command, the primary
supplier of fuel and oil to ... 阅读全帖 |
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y***o
发帖数: 416 | 8 The Road to Early-Transition-Metal Phosphinimide Olefin Polymerization
Catalysts
Organometallics, 2005, 24 (11), pp 2548–2560
DOI: 10.1021/om050096b
http://pubs.acs.org/doi/pdf/10.1021/om050096b
Structure–Activity Correlation for Relative Chain Initiation to Propagation
Rates in Single-Site Olefin Polymerization Catalysis
Organometallics, 2012, 31 (2), pp 602–618
DOI: 10.1021/om200884x
http://pubs.acs.org/doi/pdf/10.1021/om200884x
Titanium Complexes of Silicon-Bridged Cyclopentadienyl−Phen... 阅读全帖 |
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y***o
发帖数: 416 | 10 1. Highly Selective Olefin Trimerization Catalysis by a Borane-Activated
Titanium Trimethyl Complex
Organometallics, 2013, 32 (23), pp 6899–6902
DOI: 10.1021/om401098m
http://pubs.acs.org/doi/pdf/10.1021/om401098m
2. Hafnium Amidoquinoline Complexes: Highly Active Olefin Polymerization
Catalysts with Ultrahigh Molecular Weight Capacity
Organometallics, 2012, 31 (17), pp 6244–6251
DOI: 10.1021/om3005417
http://pubs.acs.org/doi/pdf/10.1021/om3005417
3. Trimerization of Ethylene to 1-Hexene with Ti... 阅读全帖 |
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y***o
发帖数: 416 | 11 1. Olefin polymer technologies—History and recent progress at The Dow
Chemical Company
Progress in Polymer Science
Volume 33, Issue 8, August 2008, Pages 797–819
http://dx.doi.org/10.1016/j.progpolymsci.2008.05.003
2. Technology: driving force behind innovation and growth of polyolefins
Progress in Polymer Science
Volume 26, Issue 8, October 2001, Pages 1287–1336
http://dx.doi.org/10.1016/S0079-6700(01)00029-6
3. Ziegler-Natta catalysts for olefin polymerizations
Progress in Polymer Science
Volu... 阅读全帖 |
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a*****c
发帖数: 3525 | 12 W Kaminsky, H H Britzinger and J A Ewen will possibly be awarded the Prize for
their contribution to the homogeneous catalysis, stereoselectivity, and
mechanism in olefin polymerization. Homogeneous catalysis has made it possible
to study the polymer chain growth and stereo-control mechanism, which was
unclear based upon hetereogeneous Z-N catalysts.
Kaminsky's contribution is in that he prepared MAO, the cocatalyst for olefin
polymerization, which dramatically increases the catalytic activity t |
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w********h
发帖数: 12367 | 13 ***** Information for SoR Members *****
Rheologist - Requisition #0700420
Chevron Phillips Chemical Company LLC, and its affiliates, is one of
the world's top producers of olefins and polyolefins and a leading
supplier of aromatics, alpha olefins, styrenics, specialty chemicals,
piping,
and proprietary plastics. Chevron Phillips Chemical employs over 5,000
professionals at manufacturing sites and research / technology centers
around the world. Chevron Phillips Chemical has the people, assets,
an |
|
发帖数: 1 | 14 本人多年从事polymer chemistry, organometallic, nanomaterials的研究工作，最近
在展审稿数量申绿，求推荐。以下是我的研究领域：
• Strong proficiency in design multi-step organic/organometallic/
inorganic syntheses under the various conditions, design of synthetic
strategy based on goal compound, cultivation of single crystals, synthesis
and characterization of organometallic compounds (Pd, Al, Sc, Y, Ti, Zr, Hf,
Fe, Co, Ni, Cr, Ir, Ru), macromolecules and nanomaterials:
1. Cross-Coupling polymerization: design, synthesis an... 阅读全帖 |
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发帖数: 1 | 15 本人多年从事polymer chemistry, organometallic, nanomaterials的研究工作，最近
在展审稿数量申绿，求推荐。以下是我的研究领域：
• Strong proficiency in design multi-step organic/organometallic/
inorganic syntheses under the various conditions, design of synthetic
strategy based on goal compound, cultivation of single crystals, synthesis
and characterization of organometallic compounds (Pd, Al, Sc, Y, Ti, Zr, Hf,
Fe, Co, Ni, Cr, Ir, Ru), macromolecules and nanomaterials:
1. Cross-Coupling polymerization: design, synthesis an... 阅读全帖 |
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m******i
发帖数: 834 | 16 17 October 2006; Vol. 103, No. 42
TOC:
1. Polymerization Special Feature: Introduction: Polymerization
Tobin J. Marks
2. Polymerization Special Feature: Surface science of single-site
heterogeneous olefin polymerization catalysts
Seong H. Kim and Gabor A. Somorjai
3. Polymerization Special Feature: Nuclearity and cooperativity effects in
binuclear catalysts and cocatalysts for olefin polymerization
Hongbo Li and Tobin J. Marks
4. Polymerization Special Feature: Kinetic resol |
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s*******y
发帖数: 384 | 17 drugstore有~~~的确是不含sls，不过我看见drugstore线上的那些avalon产品
多半是已经添加有精油的，或者是有植物萃取成分，多半还是有些味道，
再添加别的精油浓度不太好掌握，成份我copy了一份
里面有熏衣草花水，芦荟，依兰精油，柠檬和莱姆精油。
洗净成分是Olefin Sulfonate, Cocamidopropyl Betaine,和 Citric Acid,
产品名称：
Avalon Organic Botanicals Therapeutic Shampoo, Nourishing Lavender
成份如下
Certified Organic Lavender Floral Waters, Herbal Infusion of Certified Organic
Ingredients (See product details for ingredients), Yucca, Organic Sea Kelp,
Olefin Sulfonate, Cocamidopropyl Betaine, Certified Organic Aloe Vera, |
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f***y
发帖数: 4447 | 19 中新网滕州12月30日电 (邢翀)“谁能想到，这晶莹剔透的塑料小颗粒是从煤渣废
料中一步步来的！”29日，在山东滕州联鸿新材料生产车间，董事长郑月明对记者说。
联鸿新材料采用的是中国科学院自主研发的DMTO——甲醇制烯烃技术，四个字母简
单却有深意。
D(Dalian)指的是中国科学院大连化学物理研究所。大连化物所从1981年开始部署
甲醇制烯烃研究工作，经历近30年的研发，突破了甲醇制烯烃关键技术，实现世界上首
次煤基甲醇制烯烃工业化进程。
M(Methanol)即为甲醇。甲醇是煤化工业最重要的初级产品之一。当前中国甲醇产
能占据世界的半壁江山，但长期以来主要用于制造甲醛、醋酸等，附加值有限，产能利
用率相对较低。
T(To)意为转化。此前与世界其他国家一样，中国的烯烃材料都是用石油、天然气
转化而成，但能源结构的实情却是富煤少油少气。
生产出的塑料颗粒。 邢翀 摄
生产出的塑料颗粒。 邢翀 摄
中国煤炭资源相对丰富，发展以煤为原料制取石油类产品的煤化工技术，实施石油
替代战略，关系到中国经济长期稳定和能源安全，而甲醇制烯烃是实现煤制烯烃的关键
核心技术。
O(Olefin)指的是烯... 阅读全帖 |
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s*****8
发帖数: 606 | 20 稍准确点说材质是composite，不少车bumper是用thermoplastic olefins。
强烈撞击时候任何材质的bumper下场都一样，都是破碎断裂；但在轻微磕碰时候，金属
的局部吸能比composite的强，所以易变形，而且维修和制造都比composite的贵，
composite材料在轻微碰撞时吸能较强，可塑性高，跟金属比不易变形
以上仅个人看法，喜欢喷人的省点笔头！ |
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t**********3
发帖数: 12623 | 21 PCV是啥？你说PVC polyvinyl chloride？
日本车不用沥青阻尼amorphous poly alpha olefin塑料？
我倒是真心喜欢RL/Legend
PCV |
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g********d
发帖数: 19244 | 22 ☆─────────────────────────────────────☆
felixcat (felixcat) 于 (Wed Mar 20 11:40:45 2013, 美东) 提到:
因为担心法律上的问题，去年8月份我早就很委婉地提过这个问题，看这里34楼：
http://ipv6.weiming.info/zhuti/Automobile/33415715/
----------------------------------------------------------
felixcat 2012-08-20 19:51:10
这是前座的特写。
尤其要说一下那个皮椅。因为300跟E class的关系实在太密切了，所以不得不互相比较
一下。
虽说300上皮椅的用料不能说得上是最好的皮料，但起码摸上去和坐上去感觉跟家具店
里那些高档皮沙发有那么些相似的影子。而MB E class我觉得很奇怪，高一档的S
class皮椅坐上去舒服，但一到了E Class，仿佛MB一下子就因为成本低了这么多不知道
该怎么办了——E class sedan标配竟然用出租车级别的假皮面料... 阅读全帖 |
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p*********h
发帖数: 10 | 23 没有NS好像也是不行
Jan30，2014
Olefin Oligomerization and Metathesis : New Catalysts and Mechanistic
Insights
B-75 Amundson Hall
Benjamin "Keith" Keitz, Chemistry, University of California - Berkeley
(BS, CHE, UT austin, PHD, Caltech, Chem, Nobel boss)
Feb04，2014
1:25 PM
Playing with Structures at the Nanoscale: Rational Manipulation of
Nanocrystals as Building Blocks in Catalysis and Energy
B-75 Amundson Hall
Matteo Cargnello, Chemistry, University of Pennsylvania
(BS, CHEM, Postdoc, CHE, UPenn, CHEM UP... 阅读全帖 |
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K******l
发帖数: 2501 | 24 nylon的好还是olefin的好
就在macys网战上看看 |
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y****i
发帖数: 5690 | 25 HD什么价格？我们这边最近买APPLIANCE觉得HD比LOWES价格服务态度都要好不少呢。
看到是TAKE OUT就地毯按照48CENTS算。我家客厅330SQFT，可不便宜啊。
今天去LOCAL的一些店看了一下，包安装的话，最次最次的berber 要快3刀一平方尺。全
市OLEFIN，手感比我在HD摸过的SHAW和MOHAWK的有CUT和LOOP混合的感觉差很多了。HD那
种混合的是2.5（包含普通PADDING）+ 。48 REMOVE 旧地毯费+安装费。
有人告诉我另外一家店他去年装过的才。20REMOVE 费 + 1.4 地毯（包PADDING 和安装
）。。。就算都是最低档次的，也很我问的差很多啊。
晕啊。 |
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w********6
发帖数: 12977 | 26 also see:
http://www.howtobuycarpet.com/new_page_17.htm
A. Berber is a nice looking carpet, and can be quite reasonably priced.
However, it is not the best choice for folks with kids or pets. A good
quality Nylon plush would clean easily, wear better, and retain its new
appearance much longer than would an olefin Berber. If you must buy a Berber
be sure to select one with small loops, the big loops fall over quickly and
look bad sooner. |
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D******r
发帖数: 5237 | 27 材料你拍的tag上写了啊，是olefin，是一种合成纤维。
我家有个跟你拍的模样差不多的，大概也是5X8，比较厚实的合成纤维，踩上去软软的
挺舒服的，在本地一家打折店rug sale的时候买的才40刀 |
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r********n
发帖数: 399 | 29 open access的期刊，影响因子不到1。
超临界二氧化碳发泡metallocene catalyzed cyclic olefin copolymer
先找2名postdoc review文章，如果人不够还会再要第三个。
有意者站内联系。 |
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x******g
发帖数: 289 | 30 物质学院（包括物理、材料、化学等学科）
该学院一共一个正教授，三个助理教授
正教授代表作
1. A First Example of “Wittig Reaction” on a Coordinated Carbon Dioxide
Nickel Complex. Journal of American Chemical Society.
2. Theoretical Study of Carbon Dioxide Coordination in Palladium Complexes.
Applied Organometallic Chemistry.
3. Theoretical Investigation of Ketene Bonding Modes in Bis(phosphine)
Palladium Ketene Complexes. Journal of Coordination Chemistry.
4. Double Insertion of Methylene into Nickel-Phosphorus Bonds: Synthesis and
Structur... 阅读全帖 |
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E******y
发帖数: 1314 | 31 和有没有他家股票无关，好几年前就喜欢逛JCP了，那时还没股票账户，说说哪些东西
值得买:
1 首推他们店自己品牌American Living，上衣裤子，东西质量很好，特别是床上用品
，实打实的纯棉，以前打折买的650针的纯棉床单枕套系列，好几套，特别好用，摸上
去像丝质的很舒服，价格简直太给力了，到现在都没找到能beat我当时买价的
2 被子，我只和target和bed bath & beyond比过，花色和质量比target的好，和bbb差
不多，但价格比这两家便宜很多，特别是折上折时，简直太白菜了！我以前买过一些送
人，特别受欢迎。
3 小孩子玩具， 赶上节日打折，你基本上去晚了就买不到了，因为东西是好东西，价
格比任何地方都具有竞争力!
4 厨具，我现在用的好几个锅呀都是jcp买的，当然也是打折加酷胖，非常划算!
还有他们家地毯，我买过olefin的，折后5'*7’的才40～50刀，这基本上是全国最低价
了，而且质量非常好!! 你去home goods, 去bbb, target, 要不质量很差，要不价格贵
上几倍! |
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S******t
发帖数: 31 | 32 呼唤大牛解读
Saudi Basic Industries Corp., the world’s second-biggest chemicals
manufacturer, plans to expand investment in U.S. shale gas projects through
joint ventures, according to acting Chief Executive Officer Yousef al Benyan.
Sabic, as the company is known, signed an agreement with Houston, Texas-
based Enterprise Products Partners L.P. to get shale gas, al-Benyan said in
an interview in Riyadh. The company may use the feedstock in the U.S. or
export it to other countries such as the U.K., he ... 阅读全帖 |
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s*******g
发帖数: 508 | 33 Linsheng Feng, Ge Wang, Feng Li, Yongqiang Wang, David G. Evans, Xue Duan,
Recent Progresson the Heterogenization of Molybdenum Complex Olefin
Epoxidation Catalysts,
化工进展 （Chemical Industry and Engineer Progress） 2005, 24, 37-41.
请发到我的信箱 l***************[email protected] . 非常感谢。 |
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L****e
发帖数: 858 | 34 以前在JCPenney买过几张地毯，不过不是在休斯敦，质量很好，最主要的是尽量别买化
纤的，纯羊毛的也不太好打理，我买的是Olefin的，摸着手感好些~ 5'X7'的比较常见~ |
|
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L****e
发帖数: 858 | 36 原来这样啊，露怯啦，哈哈！
只感觉Olefin的摸上去手感的确比较软，不像polyester那么扎人~~ |
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z**c
发帖数: 7595 | 37 看看当年：
（以下是新语丝公开资料。 如有冒犯，敬请原谅）
巴义芳，建筑师，加拿大，多伦多
曹涵，博士, 美国Bionanomatrix公司CTO
曹化哲，金融硕士及MBA，普天寿公司杰出地产经纪
曹焕，工程师，泉州市鲤城黄石机械有限公司外贸经理
Cao Linqiu，博士，Research Scientist，荷兰DMV International
曹乾，博士，副教授，东南大学医疗保险系
曹兴龙，法律硕士，民商法学博士生，律师，浙江西子律师事务所
曹耀月，国电南京自动化股份有限公司
曹子谊，教授，山东师范大学生命科学学院
蔡卫，计算机工程与工程技术硕士，美国北德克萨斯大学工程学院
Chan Jane, 博士, Sr. Analyst, US West Financial
Chen Biao, 生物医学工程博士, Principal Scientist, Hologic, Inc.
陈昌和，硕士，福建省交通厅
陈大兵，博士研究生，美国明尼苏达大学
Chen Dong, 博士，Senior Staff Scientist, Veeco Instruments
Chen Guangjion... 阅读全帖 |
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j****y
发帖数: 10 | 38
不好意思，我是搞olefin polymerization的，属下石化下游，不大懂 你说的。无能为力 |
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l**********1
发帖数: 5204 | 39 要是这个会的话 就别去显摆了 manuscript accepted and published 前
//www.euchems-prague2012.cz/
不然会得罪某位炸药奖获得者的话 楼主的老板 即使没有著名 也会让楼主Move On 吧
4th EUROPEAN CHEMISTRY CONGRESS PRELIMINARY LIST OF PLENARY AND KEYNOTE
SPEAKERS
Plenary 45’ lectures
Michl Josef, US/CZ, Convener
Bonačić-Koutecky Vlasta, Humboldt Universität zu Berlin, GE,
Metal- -Cluster Enhanced Photochemistry and Photophysics
Ciechanover Aaron, Tumor and Vas- cular Biology Research Center, Haifa, IL,
Why our proteins have to die so w... 阅读全帖 |
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b**********e
发帖数: 2042 | 40 production of light olefins from natural gas or coal |
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T*********g
发帖数: 30 | 41 Arco (part fo BP now) had this technology some 25 years ago. They did not
go through with industrialization due to the market conditons then (MEOH
cost vs olefins).
I have reasons to believe the parties you talked about got the idea from old
literatures including expired patents. Ther eis nothing wrong with that as
patents are supposed to benefit the whole human race after the protection
period runs out. BUt the real question
is when the smart folks back in CHina can come up with somehting th... 阅读全帖 |
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n*****g
发帖数: 4117 | 42 ☆─────────────────────────────────────☆
choubaoben (fancy) 于 (Wed May 20 00:30:45 2009) 提到:
很简单的底物olefin，dichloromethane做溶剂，-78oC 通ozone gas，（通的稍微有点
久，原料消耗完，又通了半个小时），然后加 dimethyl sulfide。
后来分离的结果有aldehyede 生成，但是还有另外一个点，在5.4 ppm 和 5.1 ppm附近
有峰，但肯定不是原料。
那位大虾对ozonolysis的副产物有概念的呢？
（尽管我很穷，不过还是尽力给包子），谢谢大家。
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choubaoben (fancy) 于 (Wed May 20 00:52:03 2009) 提到:
没人回答？ 顶一下
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echfour (h4) 于 (Wed May 20 01:23:18 2009) |
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y****e
发帖数: 2023 | 44 http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGM-3S8JDDP-
4N&_user=1513374&_coverDate=03%2F14%2F1997&_rdoc=45&_fmt=high&_orig=bro
wse&_srch=doc-
info(%23toc%235258%231997%23998829998%236312%23FLA%23display%23Volume)&
_cdi=5258&_sort=d&_docanchor=&view=c&_ct=50&_acct=C000053414&_version=1
&_urlVersion=0&_userid=1513374&md5=b16a2d158f2704a8c19e05ee86a8b596
Olefin oxidation by the system H2O2/MoO2−4: competition between
epoxidation and peroxidation
Véronique Nardello, Sabine Bou |
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s*********n
发帖数: 68 | 45 Olefin polymer technologies—History and recent progress at The Dow Chemical
Company Review Article
Progress in Polymer Science, Volume 33, Issue 8, August 2008, Pages 797-819
s*********[email protected]
Thanks a lot! |
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s*********n
发帖数: 68 | 46 Catalytic production of olefin block copolymers via chain shuttling
polymerization.
Science 2006;312:714–719.
ArriolaDJ, Carnahan EM,Hustad PD,Kuhlman RL,Wenzel TT.
s*********[email protected]
thanks a lot. |
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l*****7
发帖数: 2844 | 48 Tailor-Made Polymers: Via Immobilization of Alpha-Olefin Polymerization
Catalysts
John R. Severn (Editor), John C. Chadwick (Editor) |
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m**e
发帖数: 9 | 50 RCM, 用Schrock MAP catalyst (Schrock III generation),可以得到〉95% cis 的关
环(参考Hoveyda 的天然产物合成的那几片文章）。 如果是olefin metathesis
homocoupling 和cross metathesis，有些可以得到〉99% cis.
顺反：耦合常数+NOE 差不多就能搞定了。 |
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