High-Yield Single-Walled Carbon Nanotubes Synthesized on the Small-Pore (C10) Co-MCM-41 Catalyst

نویسندگان

  • Sangyun Lim
  • Nan Li
  • Fang Fang
  • Mathieu Pinault
  • Codruta Zoican
  • Chuan Wang
  • Tarek Fadel
  • Lisa D. Pfefferle
  • Gary L. Haller
  • CheVron Phillips
چکیده

Sangyun Lim,† Nan Li,‡ Fang Fang,‡ Mathieu Pinault,§ Codruta Zoican,‡ Chuan Wang,‡ Tarek Fadel,| Lisa D. Pfefferle,‡ and Gary L. Haller*,‡ CheVron Phillips Chemical Company, 1862 Kingwood DriVe, Kingwood, Texas 77339, Department of Chemical Engineering, Yale UniVersity, P.O. Box 208286, New HaVen, Connecticut 06520-8286, CEA Saclay, DSM/ DRECAM/SPAM, Laboratoire Francis Perrin, Bât. 522, P. 249A, 91191 Gif sur YVette Cedex, France, and Department of Biomedical Engineering, Yale UniVersity, P.O. Box 208284, New HaVen, Connecticut 06520-8284

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Synthesis of Single Walled Carbon Nanotubes Using Cobalt Grafted on MCM-41 Catalysts

In this work single walled carbon nanotubes (SWNT) have been synthesized by high pressure CO disproportionation using cobalt grafted on MCM-41 by means of grafting method employing cobalt (II) acetylacetonate. The reduction temperature of the metal species of these catalysts and their physical properties characterized by XRD, nitrogen physisoption and temperature reduction programmed are compar...

متن کامل

The Preparation of Bamboo-Structured Carbon Nanotubes with the Controlled Porosity by CVD of Acetylene on Co-Mo/MCM-41

Bamboo-structured carbon nanotubes are grown on Co-Mo/MCM-41 catalyst in the temperature range of 873-973 K by thermal chemical vapor deposition of acetylene. This study shows that the purified carbon nanotubes have open tips and the metals of the catalyst are not encapsulated. Thus, the bamboo-structure seems to grow from the base. Pore size distribution of the product is quite narrow and ...

متن کامل

A PARAMETRIC STUDY ON THE GROWTH OF SINGLE-WALLED CARBON NANOTUBES OVER CO-MO/MGO NANOCATALYST IN A FLUIDIZED BED REACTOR BY CCVD METHOD

Single-walled carbon nanotubes (SWNTs) with high yield and quality were synthesized using chemical vapor deposition (CVD) over Co-Mo/ MgO nanocatalyst in a fluidized bed reactor. Different parameters such as temperature, the ratio of hydrocarbon source to hydrogen, the flow rate of gas, growth time, the size of catalyst particles, heating rate, and the kind of hydrocarbon source were examined t...

متن کامل

Synthesis, characterization, and stability of Fe-MCM-41 for production of carbon nanotubes by acetylene pyrolysis.

Fe-substituted MCM-41 molecular sieves with ca. 1, 2, and 3 wt % Fe were synthesized hydrothermally using different sources of colloidal silica (HiSil and Cab-O-Sil) and characterized by ICP, XRD, N2 physisorption, UV-vis, EPR, TPR, and X-ray absorption. Catalysts synthesized from Cab-O-Sil showed higher structural order and stability than those from HiSil. The local environment of Fe in the me...

متن کامل

Characterization of single-walled carbon nanotubes catalytically synthesized from alcohol

High purity single-walled carbon nanotubes (SWNTs) were synthesized from ethanol by catalytic CVD method. The yield of SWNTs was determined based on TGA complemented by Raman and TEM analyses. The effects of CVD reaction time and pre-reduction of catalytic metal on the yield and quality of synthesized SWNTs were investigated. The SWNT yield of more than 40% was achieved over the weight of zeoli...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008