Viet Thy Nguyen

Address:

3511 Bellefontaine St, Houston, TX 77025

Phone:

7136613038

VIN:

JTKDE167190289635

Make:

SCION

Model:

TC

Year:

2009

Address:

6907 Addicks Clodine Rd, Houston, TX 77083

Phone:

2818796784

VIN:

1G1YY26U075127449

Make:

CHEVROLET

Model:

CORVETTE

Year:

2007

Address:

11122 Cayman Mist Dr, Houston, TX 77075

Phone:

7139912382

VIN:

4T4BE46K07R004614

Make:

TOYOTA

Model:

CAMRY

Year:

2007

US Patent:

20190256446, Aug 22, 2019

Filed:

Sep 28, 2017

Appl. No.:

16/336140

Inventors:

- HOUSTON TX, US
Viet Quoc NGUYEN - Houston TX, US

International Classification:

C07C 29/132
C07C 31/20
B01J 25/02
B01J 31/04

Abstract:

Implementations of the disclosed subject matter provide methods for producing ethylene glycol from a carbohydrate feed which may include conditioning a heterogeneous hydrogenation catalyst by treatment with a protic acid resulting in an acid-conditioned heterogeneous hydrogenation catalyst. Next, in a reactor under hydrogenation conditions, the carbohydrate feed may be contacted with a bi-functional catalyst system comprising the acid-conditioned heterogeneous hydrogenation catalyst, and a soluble retro-Aldol catalyst. An intermediate product stream may be obtained from the reactor including ethylene glycol.

US Patent:

20190185398, Jun 20, 2019

Filed:

Aug 30, 2017

Appl. No.:

16/328085

Inventors:

- HOUSTON TX, US
Viet Quoc NGUYEN - Houston TX, US

International Classification:

C07C 29/76
C07C 29/141
B01J 35/00
B01J 25/04
B01J 23/30
B01J 38/72

Abstract:

Implementations of the disclosed subject matter provide a process for producing ethylene glycol from a carbohydrate feed. The process may include contacting, in a reactor under hydrogenation conditions, the carbohydrate feed with a bifunctional catalyst system which may include a heterogeneous hydrogenation catalyst including a magnetically active metal, and a soluble retro-Aldol catalyst including tungstate. A liquid effluent stream may be obtained from the reactor and may include hydrogenation catalyst particles and tungsten oxide precipitate particles. The hydrogenation catalyst particles may be magnetically separated from the tungsten oxide precipitate particles in the liquid effluent stream using a magnet in a separation vessel. The separated hydrogenation catalyst particles may be retained in a separation zone in the separation vessel and may be subsequently removed from the separation zone. A liquid product stream may be obtained from the separation vessel and may include the tungsten oxide precipitate particles and ethylene glycol.

US Patent:

20190062243, Feb 28, 2019

Filed:

Oct 16, 2016

Appl. No.:

15/768964

Inventors:

- HOUSTON TX, US
Viet Quoc NGUYEN - Houston TX, US
Pieter HUIZENGA - Amsterdam, NL

International Classification:

C07C 29/145
B01J 23/30
B01J 25/02
B01J 35/00

Abstract:

Implementations of the disclosed subject matter provide methods for producing ethylene glycol from a carbohydrate feed may include contacting, in a first reactor under hydrogenation conditions, the carbohydrate feed with a bi-functional catalyst system. The bi-functional catalyst system may include a heterogeneous hydrogenation catalyst, and a soluble retro-Aldol catalyst. The carbohydrate feed may include a concentration of carbohydrate, in the total solution entering the first reactor, of 5-40 wt % in a solvent. An intermediate product stream may be obtained from the first reactor including ethylene glycol. The hydrogenation conditions may include a temperature in the range of from 180-250 C.

US Patent:

20180297920, Oct 18, 2018

Filed:

Oct 18, 2016

Appl. No.:

15/768034

Inventors:

- HOUSTON TX, US
Viet Quoc NGUYEN - Houston TX, US

International Classification:

C07C 29/132

Abstract:

A process for the production of glycols is provided, the process comprising contacting a saccharide-containing feedstock with hydrogen in the presence of a catalyst composition and a solvent, wherein the solvent comprises water and at least 25% by weight, based on the total weight of the solvent, of one or more alcohols selected from a Cto Calcohol, a Cto Cpolyalcohol, and a combination thereof.

US Patent:

20150198737, Jul 16, 2015

Filed:

Jan 13, 2015

Appl. No.:

14/595684

Inventors:

- Houston TX, US
Viet Hoai NGUYEN - Houston TX, US

International Classification:

G01V 99/00

Abstract:

Method for generating a grid with progressive refinement in one or more one spatial dimensions to account for heterogeneity at multiple locations in the one or more spatial dimension is described. One example includes: using, as an input for a computer processor, the total number of grid cells in the one or more spatial dimensions to be gridded, and locations of features requiring grid refinement; calculating cell divisions via equations derived from geometric or logarithmic series that provide refinement at the multiple locations; and c) adjusting the cell divisions by an iterative process to obey the total number of grid cells used as input.