Abstract: The present invention provides a catalyst for the methanol autothermal reforming reaction, which includes a mixed oxide of cerium and zirconium as a carrier, and Pt deposited on the carrier. The catalyst of the present invention can catalyze a feed containing methanol, water vapor and air undergoing the autothermal reforming reaction to form a hydrogen-rich reformate gas containing hydrogen, CO and CO2.

Abstract: Carbon nanotubes are directly grown on a substrate surface having three metal layers thereon by a thermal chemical vapor deposition at low-temperature, which can be used as an electron emission source for field emission displays. The three layers include a layer of an active metal catalyst sandwiched between a thick metal support layer formed on the substrate and a bonding metal layer. The active metal catalyst is iron, cobalt, nickel or an alloy thereof; the metal support and the bonding metal independently are Au, Ag, Cu, Pd, Pt or an alloy thereof; and they can be formed by sputtering, chemical vapor deposition, physical vapor deposition, screen printing or electroplating.

Abstract: A manufacturing method of carbon nanotube transistors is disclosed. The steps include: forming an insulating layer on a substrate; forming a first oxide layer on the insulating layer using a solution with cobalt ion catalyst by spin-on-glass (SOG); forming a second oxide layer on the first oxide layer using a solution without the catalyst; forming a blind hole on the second oxide layer using photolithographic and etching processes, the blind hole exposing the first oxide layer, the sidewall of the second oxide layer, and the insulating layer; forming a single wall carbon nanotube (SWNT) connecting the first oxide layer separated by the blind hole and parallel to the substrate; and forming a source and a drain connecting to both ends of the SWNT, respectively.

Abstract: Carbon nanotubes are directly grown on a substrate surface having three metal layers thereon by a thermal chemical vapor deposition at low-temperature, which can be used as an electron emission source for field emission displays. The three layers include a layer of an active metal catalyst sandwiched between a thick metal support layer formed on the substrate and a bonding metal layer. The active metal catalyst is iron, cobalt, nickel or an alloy thereof; the metal support and the bonding metal independently are Au, Ag, Cu, Pd, Pt or an alloy thereof; and they can be formed by sputtering, chemical vapor deposition, physical vapor deposition, screen printing or electroplating.

Abstract: The present invention discloses a supported metal catalyst useful in synthesizing carbon nanotubes by low-temperature (<600° C.) thermal chemical vapor deposition (CVD), which contains particles of a noble metal having a diameter of 0.1-10 microns as a support and a metal catalyst deposited on the support. The metal catalyst is iron, cobalt, nickel or an alloy thereof. The weight ratio of the metal catalyst to the support ranges from 0.1:100 to 10:100. The present invention also discloses a method of synthesizing carbon nanotubes directly on a substrate by low-temperature thermal CVD, wherein the support is not needed to be removed from the substrate after growth of carbon nanotubes.

Abstract: A combinative carbon material is presented. A large-sized carbon material serving as a support combines with a nano-sized fibrous carbon material, which grows on the support. In addition to the support, a catalyst system includes an active nanocatalyst and an optional co-catalyst. The catalyst system is then reacted with a carbon source at an elevated temperature to form a combinative carbon material.

Abstract: A purification method for obtaining high-purity PMDA. The method controls temperatures of cyclone separators in a series to separate PMDA and other by-products of different sublimation temperatures. High-purity PMDA is collected in the first cyclone separator, and no other purification steps are needed.

Abstract: A purification method for obtaining high-purity PMDA. The method controls temperatures of cyclone separators in a series to separate PMDA and other by-products of different sublimation temperatures. High-purity PMDA is collected in the first cyclone separator, and no other purification steps are needed.