Mitsui Minings & Melting Co., Ltd.

Yokohama National University

Nsk Corporation

Tottori University

Satoshi Inagaki

Yasuo Yamazaki

Yoshihiro Kubota

Sumio Sugita

Naonobu Katada

Satoshi Suganuma

Yoshihiro Kamimura

Takahiro Kogawa

Akira Endou

Mei Takeyama

Kohei Shirahama

Yuya Ikehara

A robot mechanism is provided with a parallel link including a first output base, a first parallel link mechanism disposed on a first side of the first output base, and a second parallel link mechanism and an end effector disposed on a second side of the first output base. The first parallel link mechanism includes a first driver that generates a linear motion output and a second driver that generates a linear motion output. A tilting link mechanism including a mass body that generates a second moment load in a direction to reduce a first moment load exerted on the first parallel link mechanism by the weight of the second parallel link mechanism and the end effector is connected to the first driver and the second driver.

Robot mechanism and parallel link robot

A driving device includes a corrector, an actuator, and a position sensor. The actuator includes a nut connected to a movable part, a ball screw shaft onto which the nut is screwed, and a pulse motor that drives to rotate the ball screw shaft. The corrector includes a correction amount map in which a position correction amount for calibrating a predictable error is mapped for each position of the movable part. The corrector estimates an ideal movement position to which the movable part moves based on a command signal and refers to the correction amount map to calculate the position correction amount corresponding to a present position detected by the position sensor. The corrector generates a correction signal by correcting the command signal so as to reduce the difference between a corrected present position obtained by correcting the present position by the position correction amount and the ideal movement position.

Driving device and method for controlling the same, and parallel link robot and method for controlling the same

Provided are the following: an MWW type zeolite which has many Br&#xf8;nsted acid sites when in the form of a proton type and which is highly suitable as a cracking catalyst for cumene; a method for producing same; and an application of same. The present invention provides an MWW type zeolite in which the ratio (B/A) of the peak intensity (B) attributable to tetracoordinate aluminum relative to the peak intensity (A) attributable to hexacoordinate aluminum is 2 or more inAl MAS NMR, when measured as an ammonium type. The present invention also provides a method for producing an MWW type zeolite, the method having a step for carrying out a hydrothermal synthesis reaction in the presence of: a seed crystal of an MWW type zeolite containing no organic structure-directing agent; and a reaction mixture containing a silica source, an alumina source, an alkali source, an organic structure-directing agent, and water. The reaction mixture satisfies the following molar ratio: X/SiO&#x3c;0.15 (here, X denotes the number of moles of the organic structure-directing agent).

MWW type zeolite, method for producing same, and cracking catalyst

Provided is a beta zeolite also having exceptional catalytic activity as a catalyst other than an olefin epoxidation catalyst. This beta zeolite is synthesized without using an organic structure-directing agent and has titanium in the structural skeleton thereof, the Ti content being 0.10 mmol/g or higher. This beta zeolite preferably has an Si/Ti molar ratio of 20-200. Also, the Si/Al molar ratio is preferably 100 or higher.

Beta zeolite, method for producing same, and catalyst

The purpose of the present invention is to provide a metal-substituted beta zeolite that exhibits a more excellent catalytic performance than conventional one, and a method for producing the same. The present invention provides a metal-substituted beta zeolite by subjecting an alkali metal-form beta zeolite produced without using an organic structure-directing agent to ion exchange with ammonium ion and then, using a filter cake procedure, to ion exchange with copper ion or iron(II) ion. The present invention also provides a metal-substituted beta zeolite which has been ion exchanged with copper ion or iron(II) ion and in which the amount of Lewis acid sites is greater than the amount of Bronsted acid sites when the amount of Bronsted acid sites and the amount of Lewis acid sites are measured by ammonia infrared-mass spectroscopy temperature-programmed desorption on the as-produced state.

Metal-substituted beta zeolite and method for producing same

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Kanagawa, Japan

Satoshi Inagaki