PRODUCTION METHOD OF CATALYST PRECURSOR FOR PRODUCTION OF CARBON NANOTUBE

• Main Authors: MASUDA MIKI, MORITA TAKESHI, INOUE SHIGENORI, WATANABE KATSUMI, NAHATA NOBUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a production method of a catalyst precursor to be used for efficiently producing carbon nanotubes by use of a catalyst, the carbon nanotubes having high production efficiency, achieving easy dispersion in a resin and improving conductivity and jet-blackness in the resin.SOLUTION: The production method of a catalyst precursor for the production of carbon nanotubes includes the following steps 1 and 2. Step 1: A suspension liquid containing at least one carrier component selected from the group consisting of magnesium oxide, aluminum oxide, magnesium hydroxide and aluminum hydroxide is mixed with an aqueous solution of a metal salt containing a metal element of an active component. Step 2: During mixing or after mixing of step 1, the metal salt containing a metal element of an active component is crystallized as a hydroxide under an alkaline condition.SELECTED DRAWING: Figure 1 【課題】生産効率が高く、樹脂への分散を容易にするとともに、樹脂における導電性と漆黒性が向上するカーボンナノチューブを、触媒を利用して効率よく製造するために用いる触媒前駆体の製造方法を提供すること。【解決手段】前記課題は、以下の工程１〜２を含むカーボンナノチューブ製造用触媒前駆体の製造方法により解決される。工程１：酸化マグネシウム、酸化アルミニウム、水酸化マグネシウムおよび水酸化アルミニウムからなる群より選ばれる少なくとも１種の担持成分を含む懸濁液と、活性成分の金属元素を含む金属塩の水溶液とを混合する工程。工程２：工程１の混合時または混合後に、アルカリ性下で活性成分の金属元素を含む金属塩を水酸化物として析出させる工程。【選択図】図1