公开(公告)号：US5464583A

公开(公告)日：1995-11-07

申请号：US100008

申请日：1993-07-29

Applicant: Paul A. Lessing

Inventor： Paul A. Lessing

IPC: C04B35/80 ,  C30B25/00 ,  C04B35/81

CPC classification number: C22C1/1036 ,  C04B35/80 ,  C22C47/12 ,  C22C49/12 ,  C30B25/005 ,  C30B29/38

Abstract: A process for manufacturing Si.sub.3 N.sub.4 /SiAlON whiskers by mixing silicon carbide powder with aluminum nitride powder, adding impurities such as calcium oxide or potassium chloride to control whisker characteristics, forming the mixture in a boron nitrogen mold of desired shaped and hot isostatically pressing the formed mixture in a nitrogen environment to produce whiskers comprised substantially of SiAlON at the nucleating end of the whisker and Si.sub.3 N.sub.4 at the other end of the whisker. In one embodiment, reinforced composites are formed by impregnating the Si.sub.3 N.sub.4 /SiAlON whisker preform with a matrix material such as resin binders, liquid metals, intermetallics or ceramic materials.

Abstract translation: 通过将碳化硅粉末与氮化铝粉末混合，添加诸如氧化钙或氯化钾的杂质来控制晶须特性来制造Si 3 N 4 / SiAlON晶须的方法，在硼氮模具中形成所需的形状和热等静压压制形成的混合物 在氮气环境下，在晶须的成核端产生基本上由SiAlON构成的晶须，在晶须的另一端产生Si 3 N 4。 在一个实施方案中，通过用诸如树脂粘合剂，液态金属，金属间化合物或陶瓷材料的基质材料浸渍Si 3 N 4 / SiAlON晶须预型体来形成增强复合材料。

公开(公告)号：US5427747A

公开(公告)日：1995-06-27

申请号：US255603

申请日：1994-06-08

Applicant: Peter C. Kong ,  Paul A. Lessing

Inventor： Peter C. Kong ,  Paul A. Lessing

IPC: B01J12/00 ,  B01J19/08 ,  B01J19/24 ,  C07C29/48 ,  C01B13/00

CPC classification number: B01J19/088 ,  B01J12/007 ,  B01J19/2415 ,  C07C29/48 ,  B01J2219/00094 ,  B01J2219/00132 ,  Y10S422/906

Abstract: A chemical reactor for oxygenating hydrocarbons includes: a) a dielectric barrier discharge plasma cell, the plasma cell comprising a pair of electrodes having a dielectric material and void therebetween, the plasma cell comprising a hydrocarbon gas inlet feeding to the void; b) a solid oxide electrochemical cell, the electrochemical cell comprising a solid oxide electrolyte positioned between a porous cathode and a porous anode, an oxygen containing gas inlet stream feeding to the porous cathode side of the electrochemical cell; c) a first gas passageway feeding from the void to the anode side of the electrochemical cell; and d) a gas outlet feeding from the anode side of the electrochemical cell to expel reaction products from the chemical reactor. A method of oxygenating hydrocarbons is also disclosed.

Abstract translation: 用于含氧烃的化学反应器包括：a）电介质阻挡放电等离子体电池，所述等离子体电池包括一对具有电介质材料的电极和空隙，所述等离子体电池包括供给空隙的烃气体入口; b）固体氧化物电化学电池，所述电化学电池包括位于多孔阴极和多孔阳极之间的固体氧化物电解质，供给所述电化学电池的多孔阴极侧的含氧气体入口流; c）从电化学电池的空隙馈送到阳极侧的第一气体通道; 以及d）从电化学电池的阳极侧供给的气体出口，以排出来自化学反应器的反应产物。 还公开了一种对碳氢化合物进行加氧的方法。

公开(公告)号：US07008970B2

公开(公告)日：2006-03-07

申请号：US11176730

申请日：2005-07-06

Applicant: Peter C. Kong ,  Paul A. Lessing

Inventor： Peter C. Kong ,  Paul A. Lessing

IPC: C07C27/00 ,  C07C1/02 ,  C07B41/02

CPC classification number: C01B3/342 ,  B01J19/088 ,  B01J19/123 ,  B01J19/2415 ,  B01J2208/025 ,  B01J2219/00135 ,  B01J2219/0809 ,  B01J2219/083 ,  B01J2219/0841 ,  B01J2219/0843 ,  B01J2219/0869 ,  B01J2219/0871 ,  B01J2219/0875 ,  B01J2219/0884 ,  B01J2219/0892 ,  B01J2219/0894 ,  C01B2203/0861 ,  C07C27/12 ,  C07C29/50 ,  C10G15/08 ,  C10G32/02 ,  C10G45/04 ,  C10G47/12 ,  C10G65/12 ,  C10G69/02 ,  H05H1/2406 ,  H05H2001/2443 ,  H05H2245/121 ,  Y02P20/52 ,  C07C31/04

Abstract: A chemical reactor for direct conversion of hydrocarbons includes a dielectric barrier discharge plasma cell and a solid oxide electrochemical cell in fluid communication therewith. The discharge plasma cell comprises a pair of electrodes separated by a dielectric material and passageway therebetween. The electrochemical cell comprises a mixed-conducting solid oxide electrolyte membrane tube positioned between a porous cathode and a porous anode, and a gas inlet tube for feeding oxygen containing gas to the porous cathode. An inlet is provided for feeding hydrocarbons to the passageway of the discharge plasma cell, and an outlet is provided for discharging reaction products from the reactor. A packed bed catalyst may optionally be used in the reactor to increase efficiency of conversion. The reactor can be modified to allow use of a light source for directing ultraviolet light into the discharge plasma cell and the electrochemical cell.

Abstract translation: 用于直接转化烃的化学反应器包括电介质阻挡放电等离子体电池和与其流体连通的固体氧化物电化学电池。 放电等离子体电池包括由电介质材料隔开的一对电极和它们之间的通路。 电化学电池包括位于多孔阴极和多孔阳极之间的混合导电固体氧化物电解质膜管和用于将含氧气体供给到多孔阴极的气体入口管。 提供入口用于将碳氢化合物供给到放电等离子体电池的通道，并且提供出口以从反应器排出反应产物。 可以任选地在反应器中使用填充床催化剂以提高转化效率。 反应器可以被修改以允许使用光源将紫外光引导到放电等离子体电池和电化学电池中。

公开(公告)号：US6120706A

公开(公告)日：2000-09-19

申请号：US30614

申请日：1998-02-27

Applicant: Paul A. Lessing ,  Peter C. Kong

Inventor： Paul A. Lessing ,  Peter C. Kong

IPC: C01B33/06 ,  C04B14/32 ,  G21F1/04 ,  G21F9/30 ,  A62D31/00 ,  C01G56/00

CPC classification number: G21F1/047 ,  C01B33/06 ,  C04B14/32 ,  C04B35/58085 ,  G21F9/302 ,  G21F9/304

Abstract: The present invention is directed to methods for converting depleted uranium hexafluoride to a stable depleted uranium silicide in a one-step reaction. Uranium silicide provides a stable aggregate material that can be added to concrete to increase the density of the concrete and, consequently, shield gamma radiation. As used herein, the term "uranium silicide" is defined as a compound generically having the formula U.sub.x Si.sub.y, wherein the x represents the molecules of uranium and the y represent the molecules of silicon. In accordance with the present invention, uranium hexafluoride is converted to a uranium silicide by contacting the uranium hexafluoride with a silicon-containing material at a temperature in a range between about 1450.degree. C. and about 1750.degree. C. The stable depleted uranium silicide is included as an aggregate in a radiation shielding product, such as a concrete product.

Abstract translation: 本发明涉及在一步反应中将贫化的六氟化铀转化为稳定的贫化铀硅化物的方法。 硅化矽提供稳定的骨料，可以加入到混凝土中以增加混凝土的密度，从而保护伽马辐射。 如本文所用，术语“硅化铀”定义为通常具有式U x S y 1的化合物，其中x表示铀的分子，y表示硅的分子。 根据本发明，通过在约1450℃至约1750℃的温度范围内使六氟化铀与含硅材料接触将六氟化铀转化为硅化铀。稳定的贫化铀硅化物 作为聚合物包括在辐射屏蔽产品中，例如混凝土产品。

公开(公告)号：US5459767A

公开(公告)日：1995-10-17

申请号：US362052

申请日：1994-12-21

Applicant: Paul A. Lessing

Inventor： Paul A. Lessing

IPC: G01N3/00 ,  G01N3/56 ,  G21C17/06

CPC classification number: G01N3/565 ,  G21C17/066 ,  G01N2203/0087 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2004/40 ,  Y10S376/901

Abstract: An accurate method for testing the strength of nuclear fuel particles. Each particle includes an upper and lower portion, and is placed within a testing apparatus having upper and lower compression members. The upper compression member includes a depression therein which is circular and sized to receive only part of the upper portion of the particle. The lower compression member also includes a similar depression. The compression members are parallel to each other with the depressions therein being axially aligned. The fuel particle is then placed between the compression members and engaged within the depressions. The particle is then compressed between the compression members until it fractures. The amount of force needed to fracture the particle is thereafter recorded. This technique allows a broader distribution of forces and provides more accurate results compared with systems which distribute forces at singular points on the particle. 05459767621 00000000000000000460000000000000000000000000000000000000000000000000000000000098

Abstract translation: 一种用于测试核燃料颗粒强度的准确方法。 每个颗粒包括上部和下部，并且放置在具有上部和下部压缩构件的测试装置内。 上部压缩构件包括其中的凹部，其为圆形并且尺寸仅仅接收颗粒的上部的一部分。 下压缩构件还包括类似的凹陷。 压缩构件彼此平行，其中的凹部被轴向对准。 然后将燃料颗粒放置在压缩构件之间并且接合在凹陷中。 然后将颗粒压缩在压缩构件之间直到其断裂。 此后记录破碎颗粒所需的力量。 与在颗粒上的单个点分布力的系统相比，该技术允许更广泛的力分布并提供更准确的结果。