公开(公告)号：US08182783B2

公开(公告)日：2012-05-22

申请号：US11600384

申请日：2006-11-16

申请人： Somenath Mitra ,  Yuhong Chen

发明人： Somenath Mitra ,  Yuhong Chen

IPC分类号： B82B3/00

CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B32/17 ,  C01B2202/02 ,  C01B2202/04 ,  C01B2202/06 ,  Y10S977/845

摘要： A novel microwave-assisted process is described for the rapid removal of catalytic metal and non-desirable carbon impurities in fullerene, single wall, and multiple wall carbon nanotube preparations. The purification process is carried out at various programmed pressures, power levels and reaction times in a suspension of the nanocarbon moieties in the presence of strong acids (for example, a mixture of sulfuric acid and nitric acid), in weak acids (for example, acetic acid) and in the presence of chelating agents (for example, EDTA—ethylenediaminetetraacetic acid). In one embodiment, high metal removal efficiency of 70 to 90% is observed.

摘要翻译： 描述了一种新颖的微波辅助方法，用于快速去除富勒烯，单壁和多壁碳纳米管制剂中的催化金属和不期望的碳杂质。 在强酸（例如，硫酸和硝酸的混合物）的存在下，在弱酸（例如，不同的情况下）中，在纳米碳部分的悬浮液中的各种程序压力，功率水平和反应时间进行纯化过程， 乙酸）和螯合剂（例如EDTA-乙二胺四乙酸）存在下进行。 在一个实施方案中，观察到70至90％的高金属去除效率。

公开(公告)号：US20090304923A1

公开(公告)日：2009-12-10

申请号：US12503544

申请日：2009-07-15

申请人： Somenath Mitra ,  Yuhong Chen

发明人： Somenath Mitra ,  Yuhong Chen

IPC分类号： B05D7/00

CPC分类号： D01F11/127 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/174 ,  C01B2202/02 ,  C01B2202/06 ,  C01B2202/28 ,  D01F11/10 ,  D01F11/16

摘要： The present disclosure provides for improved soluble carbon nanotube (“CNT”) composites at least partially coated with a metal material, and improved methods for the synthesis, generation or formation of substantially soluble carbon nanotube composites via heating conditions (e.g., microwave reactions). For example, the present disclosure provides for methods for the rapid, controllable, environmentally-friendly formation of substantially soluble carbon nanotube composites via in-situ microwave-assisted reactions, wherein the carbon nanotube composites are at least partially coated with nanometal particles (e.g., nanoplatinum particles), and wherein the nanocomposites are substantially soluble in water and/or in organic solvents (e.g., o-dichlorobenzene (ODCB), chloroform, tetrahydrofuran (THF), ethanol, toluene, hexane and DMF).

摘要翻译： 本公开提供了至少部分涂覆有金属材料的改进的可溶性碳纳米管（“CNT”）复合材料，以及通过加热条件（例如微波反应）合成，产生或形成基本上可溶的碳纳米管复合材料的改进方法。 例如，本公开提供了通过原位微波辅助反应快速，可控，环境友好地形成基本上可溶的碳纳米管复合材料的方法，其中碳纳米管复合材料至少部分地涂覆有纳米金属颗粒（例如， 纳米铂颗粒），其中纳米复合材料基本上可溶于水和/或有机溶剂（例如邻二氯苯（ODCB），氯仿，四氢呋喃（THF），乙醇，甲苯，己烷和DMF）。

公开(公告)号：US07147695B2

公开(公告)日：2006-12-12

申请号：US10735988

申请日：2003-12-15

申请人： Somenath Mitra

发明人： Somenath Mitra

IPC分类号： B01D53/04

CPC分类号： G01N30/12 ,  G01N1/40 ,  G01N30/6095 ,  G01N2030/025 ,  G01N2030/121 ,  G01N2030/623

摘要： Devices for enhancing the sensitivity of a microsensor or any other micro device by providing on-line preconcentration. Microconcentrators that can be integrated with a sensor or a micromachined GC to enhance the signal to noise ratio can include a miniaturized sorbent trap fabricated on a microchip. The microconcentrator can be made on a silicon substrate so that a sensor can be integrated on the same chip. The microconcentrator is composed of at least one microchannel lined with a microheater for in-situ heating. Preconcentration may be achieved on a thin-film polymeric layer deposited above the heater in the microchannel. Rapid heating by the channel heater generates a “desorption pulse” to be injected into a detector or a sensor.

摘要翻译： 用于通过提供在线预浓缩来增强微型传感器或任何其他微型装置的灵敏度的装置。 可以与传感器或微加工GC集成以增强信噪比的微集中器可以包括在微芯片上制造的小型吸附阱。 微集中器可以制成在硅衬底上，使得传感器可以集成在同一芯片上。 微集中器由至少一个内置有用于原位加热的微加热器的微通道组成。 可以在沉积在微通道加热器上方的薄膜聚合物层上实现预浓缩。 通过通道加热器的快速加热产生将被注入检测器或传感器的“解吸脉冲”。

公开(公告)号：US06477905B1

公开(公告)日：2002-11-12

申请号：US09503629

申请日：2000-02-14

申请人： Somenath Mitra

发明人： Somenath Mitra

IPC分类号： G01N100

CPC分类号： G01N30/12 ,  G01N30/00 ,  G01N30/08 ,  G01N33/1846 ,  G01N2030/025 ,  G01N2030/121 ,  G01N2030/623 ,  G01N2030/8872 ,  G01N2030/8886

摘要： A device and method for the continuous on-line or discrete off-line concentration and measurement of organic compound contaminants in a fluid sample stream is disclosed, in which an adsorbent trap means, which may be a tube of metal packed with an adsorbent composition such as a carbon-based composition, is used to adsorb the organic compound contaminants, while venting out permanent gases, such as CO, CO2, N2, O2, NO2, SO2, CH4, and H2O. The adsorbent trap means is capable of rapid heating and cooling, and when a pulse of electrical energy or microwave energy is applied thereto, the adsorbed organic compound contaminants are rapidly desorbed therefrom; after which they are carried to a detector means for measuring the organic compound contaminants. Embodiments are included in which gas chromatography (GC) is not employed. A sampling valve may also be used to cause the sample stream to enter and be retained in a sample retention element of the sampling valve, after which the valve may be repositioned to cause the measured portion of the sample stream to be ejected from the sample retention element and be carried to the adsorbent trap means. A computer may also be used together with a power supply and a recording device in order to control all of the operations and measurements of the device and method, so that they are carried out in accordance with a predetermined schedule, or in response to the dictates of said sample measurements, or both.

摘要翻译： 公开了用于在流体样品流中连续在线或离散离线浓缩和测量有机化合物污染物的装置和方法，其中吸附捕集装置可以是填充有吸附剂组合物的金属管， 作为碳基组合物用于吸附有机化合物污染物，同时排出诸如CO，CO 2，N 2，O 2，NO 2，SO 2，CH 4和H 2 O的永久性气体。 吸附剂捕集装置能够快速加热和冷却，并且当向其施加电能或微波能量的脉冲时，吸附的有机化合物污染物从其中快速解吸; 之后将它们运送到用于测量有机化合物污染物的检测器装置。 包括不使用气相色谱（GC）的实施方案。 采样阀也可以用于使样品流进入并保留在取样阀的样品保持元件中，之后可以重新定位阀，以使样品流的测量部分从样品保留物中排出 并且被携带到吸附剂阱装置。 计算机还可以与电源和记录装置一起使用，以便控制装置和方法的所有操作和测量，使得它们根据预定的时间表执行，或者响应于命令 的所述样品测量值，或两者。

公开(公告)号：US6112602A

公开(公告)日：2000-09-05

申请号：US940641

申请日：1997-09-30

申请人： Somenath Mitra

发明人： Somenath Mitra

IPC分类号： G01N30/00 ,  G01N30/02 ,  G01N30/12 ,  G01N30/62 ,  G01N33/00 ,  G01N33/18 ,  G01N1/00

CPC分类号： G01N30/12 ,  G01N30/00 ,  G01N33/1846 ,  G01N2030/025 ,  G01N2030/121 ,  G01N2030/623

摘要： A device and method for the continuous on-line or discrete off-line concentration and measurement of organic compound contaminants in a fluid sample stream is disclosed, in which an adsorbent trap means, which may be a tube of metal packed with an adsorbent composition such as a carbon-based composition, is used to adsorb the organic compound contaminants, while venting out permanent gases, such as CO, CO.sub.2, N.sub.2, O.sub.2, NO.sub.2, SO.sub.2, CH.sub.4, and H.sub.2 O. The adsorbent trap means is capable of rapid heating and cooling, and when a pulse of electrical energy or microwave energy is applied thereto, the adsorbed organic compound contaminants are rapidly desorbed therefrom; after which they are carried to a detector means for measuring the organic compound contaminants. Embodiments are included in which gas chromatography (GC) is not employed. A sampling valve may also be used to cause the sample stream to enter and be retained in a sample retention element of the sampling valve, after which the valve may be repositioned to cause the measured portion of the sample stream to be ejected from the sample retention element and be carried to the adsorbent trap means. A computer may also be used together with a power supply and a recording device in order to control all of the operations and measurements of the device and method, so that they are carried out in accordance with a predetermined schedule, or in response to the dictates of said sample measurements, or both.

摘要翻译： 公开了用于在流体样品流中连续在线或离散离线浓缩和测量有机化合物污染物的装置和方法，其中吸附捕集装置可以是填充有吸附剂组合物的金属管， 作为碳基组合物用于吸附有机化合物污染物，同时排出诸如CO，CO 2，N 2，O 2，NO 2，SO 2，CH 4和H 2 O的永久性气体。 吸附剂捕集装置能够快速加热和冷却，并且当向其施加电能或微波能量的脉冲时，吸附的有机化合物污染物从其中快速解吸; 之后将它们运送到用于测量有机化合物污染物的检测器装置。 包括不使用气相色谱（GC）的实施方案。 采样阀也可以用于使样品流进入并保留在取样阀的样品保持元件中，之后可以重新定位阀，以使样品流的测量部分从样品保留物中排出 并且被携带到吸附剂阱装置。 计算机还可以与电源和记录装置一起使用，以便控制装置和方法的所有操作和测量，使得它们根据预定的时间表执行，或者响应于命令 的所述样品测量值，或两者。