EXPERIMENTAL INVESTIGATION OF KINETIC AND TRANSPORT PARAMETERS IN A WALL－COOLED FIXED－BED REACTOR

ＥＸＰＥＲＩＭＥＮＴＡＬＩＮＶＥＳＴＩＧＡＴＩＯＮＯＦＫＩＮＥＴＩＣＡＮＤＴＲＡＮＳＰＯＲＴＰＡＲＡＭＥＴＥＲＳＩＮＡＷＡＬＬ－ＣＯＯＬＥＤＦＩＸＥＤ－ＢＥＤＲＥＡＣＴＯＲＺｈｅｎ－ＭｉｎＣＨＥＮＧａｎｄＷｅｉ－ＫａｎｇＹＵＡＮ（ＵＮＩＬＡＢＲｅｓｅ...     

改性泥炭腐植酸净化剂对锌,镍,镉等重金属离子吸附效果的研究

改性泥炭腐植酸净化剂对锌、镍、镉等重金属离子吸附效果的研究周群ＡＢＳＯＲＰＴＩＯＮＥＦＦＥＣＴＯＦＭＯＤＩＦＩＥＤＰＥＡＴＨＵＭＩＣＡＣＩＤＰＵＲＩＴＹＩＮＧＡＧＥＮＴＯＮＺＮ￣２＋、Ｎｉ￣２＋、Ｃｄ￣２＋ＡＮＤＯＴＨＥＲＨＥＡＲＹＭＥＴＡＬＩＯＮＳ...     

国外茂金属催化剂及其在聚烯烃中应用的现状

国外茂金属催化剂及其在聚烯烃中应用的现状徐世艾ＣＵＲＲＥＮＴＳＴＴＵＡＴＩＯＮＯＦＭＥＴＡＬＬＯＣＥＮＥＣＡＴＡＬＹＳＴＡＮＤＩＴＳＡＰＰＬＩＣＡＴＩＯＮＩＮＰＯＬＹＯＬＥＦＩＮＥＡＢＲＯＡＤ１引言近几年国内出现了茂金属催化剂的热潮，国外对它的研究则...     

化工设备及管道保温层的经济厚度

化工设备及管道保温层的经济厚度祖玉梅ＥＣＯＮＯＭＩＣＡＬＴＨＩＣＫＮＥＳＯＦＴＨＥＲＭＡＬＢＡＲＲＩＥＲＩＮＣＨＥＭＩＣＡＮＬＥＱＵＩＰＭＥＮＴＡＮＤＰＩＰＥ１前言化工保温技术直接牵涉到工程的投资和经济性、能源的节约及防止环境热污染等。从节能考虑，在...     

螺旋霉素的油／水界面循环伏安法测定

螺旋霉素的油／水界面循环伏安法测定韩玉洁，杨文友，徐忠ＣＹＣＬＩＣＶＯＬＴＡＭＥＴＲＹＤＥＴＥＲＭＩＮＡＴＩＯＮＯＦＳＰＡＮＭＹＣＩＮＡＴＷＡＴＥＲＬＯＩＬＩＮＴＥＲＦＡＣＥＳ１前言油／水界面循环伏安法是近年来发展起来的一种新的电化学分析方法。并且已...     

CHEMICAL SENSITIZATION OF TABULAR－GRAIN EMUL－SIONS IN THE PRESENCE OF SENSITIZING DYE

ＣＨＥＭＩＣＡＬＳＥＮＳＩＴＩＺＡＴＩＯＮＯＦＴＡＢＵＬＡＲ－ＧＲＡＩＮＥＭＵＬ－ＳＩＯＮＳＩＮＴＨＥＰＲＥＳＥＮＣＥＯＦＳＥＮＳＩＴＩＺＩＮＧＤＹＥ￥ＣＨＥＭＩＣＡＬＳＥＮＳＩＴＩＺＡＴＩＯＮＯＦＴＡＢＵＬＡＲ－ＧＲＡＩＮＥＭＵＬ－ＳＩＯＮＳＩＮＴ...     

DROPWISE CONDENSATION OF STEAM ON ALLOY SURFACES OBTAINED BY ION－IMPLANTATION TECHNIQUE

ＤＲＯＰＷＩＳＥＣＯＮＤＥＮＳＡＴＩＯＮＯＦＳＴＥＡＭＯＮＡＬＬＯＹＳＵＲＦＡＣＥＳＯＢＴＡＩＮＥＤＢＹＩＯＮ－ＩＭＰＬＡＮＴＡＴＩＯＮＴＥＣＨＮＩＱＵＥＹｏｎｇ－ｊｉＳｏｎｇａｎｄＸｉａｏ－ｇｕａｎｇＲｅｎ（ＬｉａｏｙａｎｇＰｅｔｒｏｃｈｅｍＥｎｇ...     

APPLICATION AND FUNDAMENTAL RESEARCH OF ROTATING STREAM TRAY

ＡＰＰＬＩＣＡＴＩＯＮＡＮＤＦＵＮＤＡＭＥＮＴＡＬＲＥＳＥＡＲＣＨＯＦＲＯＴＡＴＩＮＧＳＴＲＥＡＭＴＲＡＹＴａｎＴｉａｎｅｎ；ＳｈｉＨｕｉｘｉａｎｇ；ＣｈｅｎＪｉａｎｍｅｎｇ；ＳｈｉＸｉａｏｒｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃａｌＥｎｇｉｎ...     

硬脂酸胍的合成及其在特种陶瓷制备中的应用

硬脂酸胍的合成及其在特种陶瓷制备中的应用ＳＹＮＴＨＥＳＩＳＯＦＧＵＡＮＩＤＩＮＥＳＴＲＥＡＲＩＣＡＣＩＤＳＡＬＴＡＮＤＡＰＰＬＩＣＡＴＩＯＮＩＮＳＰＥＣＩＡＬＣＥＲＡＭＩＣＳＰＲＥＰＡＲＡＴＩＯＮ刘玮炜李树安唐建伟１前言早在１８６１年，Ｓｔｒｅｃｋ...     

EPDM／CPE并用胶料的阻燃性与电绝缘性研究

主要探讨了ＥＰＤＭ／ＣＰＥ并用比、阻燃剂（Ｓｂ２Ｏ３、十溴联苯醚）的配比、填料品种及用量、硫化剂ＤＣＰ及助交联剂ＴＡＩＣ等因素对ＥＰＤＭ／ＣＰＥ并用胶料力学性能、阻燃性能及电性能的影响,结果表明：选择ＥＰＤＭ４０,ＣＰＥ６０．３ＰｂＯ１．２,２ＰｂＯ１．２,ＤＣＰ２～３,ＴＡＩＣ１,滑石粉３０,Ｓｂ２Ｏ３１０～１５,ＺＲ－１０２０～３０,ＳＡ１,ＺｎＯ５,可制得综合性能较好的ＥＰＤＭ／ＣＰＥ并用胶     

利用C_5开发叔戊基甲醚

介绍了利用C_5生产汽油抗爆剂叔戊基甲醚的工艺进程。其中KOCH公司开发的催化蒸馏工艺是目前最先进的工艺。我国当前尚未有工业化生产叔戊基甲醚的装置。利用流化催化裂化C_5生产叔戊基甲醚是急待开发的课题。     

降低异戊烯装置TAME中杂质含量

通过源头控制减少其他碳五的带入照：原料净化,减少醚化反应物料中的杂质;优化工艺操作等,可减少TAMZ中的杂质,以保证TAME产品质量和TAME裂解生产异戊烯时异戊烯的产品质量。     

谈谈C5的综合利用

本文简单地介绍了C5的产量和现状。主要讨论了C5综合利用，其中包括C5生产TAME、石油树脂、叔戊醇、加氢制戊烷、在超强酸条件合成金刚烷和某厂利用C5流程图。C5资源的合理利用不仅是有效利用石油资源的组成部分，也是改善产品结构，提高产品质量、增加企业效益的重要途径之一。     

我国Ｃ５／Ｃ６烷烃异构化催化剂研究进展

２０世纪８０年代以来,由于环保的要求,Ｃ_５／Ｃ_６烷烃异构化工艺在国外得到迅速发展,并已成为生产高辛烷值汽油组分的重要工艺。我国目前尚无轻烃异构化装置,但国内许多部门进行了Ｃ_５／Ｃ_６异构化催化剂的研究,为Ｃ_５／Ｃ_６异构化工业生产做好了准备。     

双环戊二烯的生产与应用

双环戊二烯(DCPD)主要来自石油裂解制乙烯副产物的C5馏分。DCPD化学性质活泼,可与多种化合物反应,生成多种衍生物,用途十分广泛。文章综述了DCPD的结构、性能、生产及其在精细化工和有机高分子领域中的应用,并对我国DCPD未来的发展提出了建议。     

磷酸活化磷尾矿制取聚合态钙镁磷肥的工艺条件研究

为减少磷尾矿对环境的损害,采用高温分子间脱水聚合的方法,对利用磷尾矿合成聚合态钙镁磷肥做了研究。将磷酸和磷尾矿按照物质的量比[n（P₂O₅）∶n（CaO+MgO）]为1∶（1.2~1.8）进行混合反应,将反应的料浆在250~600 ℃下煅烧1~5 h得到干基的产品。产品检测结果表明,聚合态钙镁磷肥的聚合度为1~4,P₂O₅的聚合率在80%以上,总P₂O₅质量分数为50%~60%,CaO质量分数为17%左右,MgO质量分数为12%左右,产品结构为多孔隙的球状结构。该产品可以根据不同地区的需要灵活调整原料配比,以得到不同性质的产品。该研究已经在中试装置中进行试生产,正式生产车间目前正在中国贵州建设,目标产能为20万t/a。     

Oxygenate fuels: Market expansion and catalytic aspect of synthesis

Periodical oil crises, environmental issues, and energy consumption optimisation brought oxygenated compounds into consideration as fuel additives with the role of enhancer and/or octane booster. Their progressive introduction into the fuel market is examined in the light of technical and legislative motivation. Their different roles played in the fuel formulation are recognised and their past, present and future importance is discussed here. Light alcohols and ethers offer different and specific advantages in meeting the clean fuel requirements. Methyl tert-butyl ether (MTBE) has been the preferred product up to now; positive future perspectives can be envisaged for the less volatile ethyl tert-butyl ether (ETBE) and methyl-tert amyl ether (TAME). A schematic oxygenate production pattern is reported allowing to clarify the complex integration of oxygenate manufacture with, natural gas, refinery and petrochemical. The main reactions involved are outlined. Alcohol addition to tertiary olefins appears to be a focal point in oxygenated production leading to alkyl tert-alkyl ethers (MTBE, ETBE, TAME). The industrial production of ethers started in 1972 in Italy and grew impressively: from 50,000 tons/year to about 30 million tons/year actually. Parallel to the industrial development fundamental studies were done to clarify the mechanism of reaction, the role and criteria of choice of catalysts. This review covers the thermodynamic, kinetic and catalytic aspects of the reaction. The results available in the literature are referred, compared and discussed.     

汽油中含氧化合物组分的技术进展

介绍了汽油中含氧化合物研究的进展,以及甲基叔丁基醚（ＭＴＢＥ）和叔戊基甲基醚（ＴＡＭＥ）生产的原料、合成工艺、催化剂及其模型化研究。     

甲基叔戊基醚裂解催化剂的催化性能

介绍了SPC-01型催化剂在甲基叔戊基醚(TAME)裂解生产异戊烯中的工业应用。该催化剂具有良好的活性和稳定性,TAME转化率和异戊烯的选择性均超过99%。利用X射线衍射(XRD)、热重分析(TG-DTA)、红外光谱(FT-IR)和孔结构分析对新鲜的和从装置卸出的催化剂进行表征,并对催化剂活性下降的机理进行了讨论。结果表明,在长周期运行中,催化剂比表面下降、结焦和酸性的损失是导致催化剂活性降低的主要原因,最后提出了TAME裂解催化剂的改进方向。     

A Calcium(II)-Based <Emphasis Type="SmallCaps">l</Emphasis>-Arginine for ATP Binding and Hydrolysis

The supramolecular recognition of Ca(II) and N _α-4-tosyl-l-arginine methyl ester hydrochloride (TAME) with ATP were investigated using ¹H and ³¹P NMR spectra. In the Ca(II)–ATP–TAME ternary system, Ca²⁺ and TAME bind with ATP via the phosphate chain and adenine ring of ATP. The binding forces are mainly electrostatic and cation (Ca²⁺)–π and π–π stacking interaction. Furthermore, the hydrolysis of ATP catalyzed by Ca(II) and TAME was studied at pH 7.0 and 60 °C using ³¹P NMR spectra. Kinetics studies show that the ATP hydrolysis rate constant is 0.1035 h⁻¹ in the Ca(II)–TAME–ATP ternary system, whereas the value is 8.5 × 10⁻³ h⁻¹ under the same conditions without TAME and Ca²⁺. The Ca(II) ions and TAME accelerate the ATP hydrolysis process about 12-fold. The proposed mechanism of ATP hydrolysis catalyzed by Ca²⁺–TAME occurs through an addition–elimination reaction sequence. These results can help us get more useful information at the molecular level about the key amino acid residue(s) and metal ions that serve as cofactors in the ATPase effect on ATP hydrolysis/synthesis.