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莰烯

莰烯的相关文献在1956年到2022年内共计171篇,主要集中在化学工业、化学、中国医学 等领域,其中期刊论文107篇、会议论文5篇、专利文献88142篇;相关期刊44种,包括药物分析杂志、林产化学与工业、国内外香化信息等; 相关会议5种,包括2015中国化工学会学术年会、第十八届全国高技术陶瓷学术年会、2011化工分离技术交流与展示大会等;莰烯的相关文献由304位作者贡献,包括肖转泉、关炽昌、刘涛等。

莰烯—发文量

期刊论文>

论文:107 占比:0.12%

会议论文>

论文:5 占比:0.01%

专利文献>

论文:88142 占比:99.87%

总计:88254篇

莰烯—发文趋势图

莰烯

-研究学者

  • 肖转泉
  • 关炽昌
  • 刘涛
  • 林中祥
  • 刘金龙
  • 宁春利
  • 张春雷
  • 陈庆之
  • 曹舒林
  • 朱庆兵
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 吴金芝; 王琳琳; 陈小鹏; 童张法; 范孝雄; 梁保芳
    • 摘要: 改进了Ellis平衡釜的保温、搅拌与压力控制系统,建立了一套可视窗口的实验装置.测定了莰烯+(+)-3-蒈烯体系在313.15、373.15和433.15 K下的汽液平衡数据;采用面积法和Van Ness检验法对实验数据进行热力学一致性检验,所有数据均符合Gibbs-Duhenm的热力学一致性;选用Aspen plus软件中NRTL、Wilson和UNIQUAC模型,由最大似然法对目标函数进行优化,实现对实验数据的关联.结果表明,气相组成和平衡压力的估算值与实验值的最大平均相对偏差为0.0128和0.0009,最大均方根偏差为0.0003和0.0012 kPa,相对挥发度的估算值与实验值的绝对平均偏差分别为0.09%、0.03%和0.04%.
    • 王广辉; 杨高东; 周政; 张志炳
    • 摘要: 选用大孔阳离子交换树脂作催化剂,250 mL的三口烧瓶作为搅拌釜反应器,研究了莰烯与丙酸在不同反应条件下(搅拌速率、树脂类型、树脂含量、配比、温度、催化剂重复使用次数)对合成丙酸异龙脑酯的影响,并得到了优化的工艺条件.采用UNIFAC基团贡献法估算活度系数,获得了不同温度下反应的平衡常数以及该反应的焓变、熵变、吉布斯自由能等热力学数据.采用拟均相模型计算出此反应的反应速率常数及反应活化能等动力学数据.此外,在固定床反应器上进行了对比实验,结果表明该反应在两种反应器中的效果基本相似.
    • 丁雨晴; 蒋丽红; 王亚明
    • 摘要: α-蒎烯是一种重要的可再生资源,因其特殊的单环双键结构而具有较高的化学活性,在医学及农药领域有着广泛的应用.介绍了近几年α-蒎烯异构化的反应机理及产物莰烯的发展状况,详细介绍了目前研究的几种催化剂,如固体超强酸、沸石分子筛、杂多酸及其它催化剂,系统地介绍了酸催化剂,同时对表面酸位点与催化性能间的关系进行了初探与总结,分析并展望了α-蒎烯及莰烯的未来发展前景.
    • 崔军涛; 杨育臻; 梁兴华; 赵振东; 黄金龙
    • 摘要: Isomeric esterification of camphene with glacial acetic acid catalyzed by Lewis acids was studied to produce isobornyl acetate. And the suitable esterification conditions were examined and optimized as following: FeCl3as catalyst, catalyst dosage 10% (mass ratio of camphene),reaction temperature 25°C,reaction time 2 h,n(camphene):n(acetic acid) 1:3. As results, using 94.9% camphene(the total of camphene 84.8% and tricyclene 10.1%) as raw material,the conversion rate of camphene was nearly 99%,the selectivity of isobornyl acetate reached 94%,and the yield of isobornyl acetate reached more than 88% in the product.%以路易斯酸为催化剂催化莰烯与冰乙酸酯化制备乙酸异龙脑酯,通过催化剂筛选和反应条件的优化,获得了莰烯与冰乙酸酯化反应合成乙酸异龙脑酯的最佳反应条件,即:FeCl3为催化剂,添加量为莰烯质量的10%,反应温度在25°C,反应时间2 h,n(莰烯):n(冰乙酸) 1:3.在此条件下,采用含莰量94.9%的莰烯(莰烯84.8%,三环烯10.1%)为原料进行反应时,莰烯转化率接近99 %,乙酸异龙脑酯选择性94%,乙酸异龙脑酯的平均产率88%.
    • 张庭建; 汤吉海; 费兆阳; 陈献; 崔咪芬; 乔旭
    • 摘要: 以磺酸改性的SBA-15(SO3H-SBA-15)为催化剂,丙烯酸与莰烯为原料加成反应制备丙烯酸异冰片酯(IBOA).在转速600 r/min下消除外扩散的影响,并采集反应动力学数据.将SO3H-SBA-15催化莰烯异构化副反应生成的α-松油烯、柠檬烯、葑烯归类为异构烯烃,与丙烯酸加成生成的相应丙烯酸酯归类为丙烯酸异构酯,采用拟一级动力学模型进行数据回归,得到丙烯酸与莰烯加成酯化、烯烃异构以及异构烯烃酯化反应的反应热分别为-9.41、-31.32和-13.39 kJ/mol,动力学拟合结果与实验数据吻合良好,并且通过统计检验,表明动力学模型是可靠的.%The addition reaction of camphene with acrylic acid to prepare isobornyl acrylate (IBOA) was carried out over sulfonic acid functionalized SBA-15 (SO3H-SBA-15).Kinetic experimental data were obtained with the eliminated external diffusion at the stirring speed of 600 r/min.The α-terpinene,limonene,fenchene derived from the isomerization of camphene catalyzed by SO3H-SBA-15 were treated as isomeric olefins,and the corresponding acrylic esters generated by addition of acrylic acid and isomeric olefins were regarded as isomeric acrylate.From the established pseudo-first-order kinetic model,the parameters were regressed.The reaction heat of addition esterification of acrylic acid and camphene,isomerization of camphene,and esterification of isomeric olefins was-9.41,-31.32 and-13.39 kJ/mol,respectively.The correlated results agreed well with the experimental data,and the statistic test results indicated that the kinetic model was reliable.
    • 刘威华; 李珅珅; 王建红; 王一涛; 刘勇
    • 摘要: Six heteropolyanion-based ionic liquids were synthesized and used as catalysts in the synthesis of isoborneol by direct hydration of camphene. The effects of catalyst type, loading, reaction tempera-ture, reactant ratio and reaction time were investigated. Compared to the traditional catalysts, [ BSmim] 4 SiW12 O40 showed superior catalytic activity. The conversion of camphene was 23.55% and the selectivity of isoborneol was 87.77% under a condition of reaction temperature 80 °C, [ BSmim] 4 SiW12 O40 dosage 20%, reactant ratio of 1: 1: 2 ( mass ratio) and reaction time 3 h. Moreover, [ BSmim] 4 SiW12 O40 could be recycled for five times without obvious decrease in the catalytic activity.%合成了6种杂多酸型离子液体,用于催化莰烯直接水合制异龙脑,考察了催化剂的种类及用量、反应温度、反应物配比和反应时间等因素对反应的影响.实验结果表明,1-(4-磺酸基)丁基-3-甲基咪唑硅钨酸盐([BSmim]4 SiW12 O40)催化剂的活性优于传统的催化剂;合成异龙脑的适宜条件为:温度80°C,[BSmim]4 SiW12 O40催化剂用量为反应物总质量的20%,莰烯:水:异丙醇=1:1:2(质量比),反应时间3 h,在此条件下莰烯的转化率为23.55%,异龙脑的选择性为87.77%;[BSmim]4 SiW12 O40催化剂重复使用5次,其催化活性无明显下降.
    • 王雪源; 曾韬
    • 摘要: To analyze the effects of calcination on the catalytic performance of H-mordenite,H-mordenite (Si/Al =16) was calcined at 300°C,550°C and 700°C,and all the catalysts were characterized by using BET,XRD,NH3-TPD and Py-IR.The specific surface area,pore volume,the intensities of Lewis/Br(o)nsted acid and strong/weak acid of the samples were further investigated.The catalysts were used in the isomerization reaction of a-pineneat atmospheric pressure under nitrogen flow.The effects of specific surface area,pore volume,the intensities of Lewis/Br(o)nsted acid and strong/weak acid on the activity and product selectivity of the catalysts were analyzed by the conversion of α-pinene and selectivity to any product.The results showed that the samples could be activated by calcinations at 550°C.The Br(o)nsted acid and Lewis acid contents decreased significantly in the range of 300-700°C.The decrease of the former was higher than that of the latter.Meanwhile,the weak acid and strong acid contents of the zeolites also decreased with the rising calcinations temperature,but the strong acid content reduced faster than the weak acid content.The isomerization of α-pinene indicates it is favorable for the formation of camphene when the content of Lewis acid is higher than that of Br(o)nsted acid.When the reaction time of α-pinene isomerization with 700HM06 was 12 h,the conversion of α-pinene was 97.35%,and the selectivity of comphene and monocyclic products were 43.83% and 52.05%,respectively.Therefore the optimized calcination temperature is 700°C.%为研究焙烧对H-丝光沸石催化性能的影响,在300,550和700°C条件下焙烧H-丝光沸石(硅铝比为16),通过N2吸附-脱附仪(BET)、XRD、NH3-TPD、Py-IR对沸石进行表征,研究了焙烧后沸石的比表面积、孔结构、Lewis酸、Br(o)nsted酸及强、弱酸的变化情况.以焙烧沸石为催化剂进行催化α-蒎烯异构反应,通过α-蒎烯转化率、莰烯、单环萜烯的选择性,分析了沸石结构和Lewis酸、Br(o)nsted酸及强、弱酸的变化对反应活性及产物选择性的影响.结果表明:沸石在550°C得以活化,在300~ 700°C焙烧范围内,沸石中Lewis酸和Br(o)nsted酸量明显减少,Br(o)nsted酸量减少速度更快;同时沸石强、弱酸也随焙烧温度升高而减少,强酸减少速度高于弱酸.α-蒎烯异构试验结果表明,Lewis酸量大于Br(o)nsted酸量时更有利于α-蒎烯异构产物向莰烯转化,样品700HM06与α-蒎烯反应12h时,α-蒎烯转化率达到97.35%,莰烯选择性为43.83%,单环萜烯选择性为52.05%,较其他温度焙烧的催化剂具有更高的转化率和莰烯选择性,因此700°C是最佳的焙烧温度.
    • 杨有旭; 李学坤; 汪田; 葛蕊; 雷仲波
    • 摘要: TiCl4水解同时加入磷钨酸,氨水沉淀后,采用硫酸铵混合后焙烧工艺制备了SO2-4/TiO2负载磷钨酸型固体酸催化剂.用乙酸和莰烯进行反应合成乙酸异龙脑酯,对反应时间、催化剂用量、莰烯与乙酸物质的量比、反应温度进行了优化实验,采用气相色谱法进行产品检测.结果表明反应酸烯物质的量比为2:1、催化剂用量为酸烯总质量的3%、反应6h、反应温度80°C的条件下转化率最高,可达85.5%,经初步蒸馏后产品纯度可达95%以上.
    • 金霖霖; 翁玉辉; 范国荣; 肖转泉; 陈金珠; 王鹏; 王宗德
    • 摘要: 以莰烯为原料,经Vilsmeier-Haack反应、催化加氢得到异莰烷基甲醛,异莰烷基甲醛经氧化反应得到异莰烷基甲酸。在对甲苯磺酸的催化下,与一系列一元醇(正丙醇、正丁醇、异丁醇、仲丁醇、正戊醇、异戊醇和环己醇)进行酯化反应,合成了未见报道的7种异莰烷基甲酸酯类化合物4a-4g,产率在61~84%之间,采用IR、MS、1 H NMR及13 C NMR对产物进行了结构表征。分析了异莰烷基甲酸酯及其反应中间体的合成方法。本研究可为莰烯的精细化学利用提供一定的理论基础。%Isocamphyl formaldehyde was synthesized from camphene by the Vilsmeier-Haack reaction and catalytic hydrogenation. Isocamphanyl formaldehyde was converted into isocamphanyl formic acid through the oxidation with K2Cr2O7-H2SO4. Then,seven novel ester derivatives of isocamphanyl formic acid were synthesized by the esterification reaction of isocamphanyl formic acid and seven monohydric alcohol (n-propanol,n-butanol,iso-butanol,sec-butanol,n-pentanol,iso-pentanol and cyclohexanol ),under the catalysis by p-toluenesulfonic acid. The yield of these ester derivatives were ranged between 61~84%. The structures of these syn-thesized compounds were characterized by infrared spectroscopy(IR),mass spectrometry(MS),and nuclear magnetic resonance spectroscopy(1 H NMR,13 C NMR). Synthetic method of isocamphanyl formic acid,ester derivaitves and other intermediates were discussed. This study provided a theoretical basis to the fine chemistry utilization of camphene.
    • 鲁艺; 申丽; 王洋; 江坤; 殷果; 王珏; 王铁杰
    • 摘要: 目的:建立同时测定砂仁挥发油中α-蒎烯、莰烯、月桂烯、柠檬烯、樟脑、龙脑、乙酸龙脑酯7种活性成分含量的GC法,用于中药砂仁的质量控制.方法:采用DB-5色谱柱(30m×0.320 mm×0.25μm),柱温为程序升温,FID检测器,进样口温度230°C,检测器温度250°C.其中樟脑、龙脑、乙酸龙脑酯3种单萜类挥发油采用一测多评法进行测定.以乙酸龙脑酯为内参物,分别计算樟脑和龙脑的相对校正因子(RCF),利用RCF测定樟脑和龙脑的含量,其余4种活性成分采用外标法测定.结果:α-蒎烯、莰烯、月桂烯、柠檬烯、樟脑、龙脑、乙酸龙脑酯的线性范围分别为3.380~169.0 nmg·mL-1(r=-0.999 8)、13.90~696.0mg·mL-1(r=0.999 9)、4.200~210.0 mg·mL-1(r=0.999 9)、18.20~908 mg·mL-1(r=0.999 9)、10.50~525.0 mg·mL-1(r=0.999 9)、9.58~479.0 mg·mL-1(r=0.999 8)和32.60~1.630×103 mg·mL-1(r=0.999 9),方法平均回收率(n=6)分别为101.3%(RSD=1.9%)、101.5%(RSD=2.6%)、101.9%(RSD=1.2%)、101.3%(RSD=2.3%)、101.0%(RSD=1.6%)、101.7%(RSD=1.3%)和99.9%(RSD=2.2%).各批次中药砂仁中α-蒎烯、莰烯、月桂烯、柠檬烯、樟脑、龙脑和乙酸龙脑酯7种成分的含量范围分别为0.117 0~0.430 5、0.450 4~3.734、0.101 0~1.808、0.319 6~3.687、1.660~10.40、0.290 0~ 1.640和0.454 7~13.16 mg·g-1.结论:所建立的分析方法简便、快速,专属性强,增加了能反映砂仁临床疗效的质量控制指标,为现有国家标准的完善提供依据.
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